Friday May 20 2022 Forecast (8:21AM)

DAYS 1-5 (MAY 20-24)

A slow-moving warm front is still traversing our region, as evident by the surface wind, very light but from the east and southeast in the Boston area to southern NH and from the southwest in areas to the south, as well as a pretty extensive blanket of stratus clouds across all coastal areas and even inland for some distance in southern NH and northeastern MA as well. It basically takes the entirety of today for this front to push its way through our area. The high May sun will work on the stratus which should break up in most locations it sits as of the time of this writing. So all in all it’s not to be a bad day, other than contending with some low cloudiness in some areas. Tonight, as the warmer air becomes more established, we’ll have to eye the remains of a mesoscale convective system from the west, as it may bring a batch of at least showers and potentially heavier thunderstorms to parts of southern New England. Short range guidance indicates this favors areas near and south of I-90, but these things are fickle and can be very poorly forecast by short range guidance at times, so tracking it closely will be necessary. I don’t think this is going to be a cause of concern regarding severe weather, but it’s always worth watching just in case. And then the heat is on for the weekend. Things come together at upper levels and at the surface to deliver a 2-day hot spell where many areas will see 90+ for high temps. It’s important to note this will NOT be a heatwave, as you need 3 or more consecutive days of 90+ for that. And this is going to break by Monday. But before that, we’re hot. The usual areas along the South Coast and some East Coast beaches will be cooler though. If you go to the beach, remember that the water temperatures remain very chilly at this time of year (barely to 50 East Coast beaches, and just into the 50s South Coast beaches). You lose body heat rapidly in the water, so be wise about immersion and length of time in there if you decide to brave the chilly water. Humidity will be on the increase this weekend, but we’re starting low, and it will never really get overly oppressive, although the combination of the moderate humidity and early-season heat will make it feel quite uncomfortable for those sensitive to it. A bit of atmospheric irony: There are some conditions that would help initiate explosive thunderstorm development on Saturday, but too many limiting factors including no triggers and a big old cap, so we’re not going to have any storms around at all that day. Sunday, the “perfect” conditions are lost a bit, but so are some of the limitations, so we may see a few isolated air mass storms pop up, but more organized activity will wait until a cold front enters and crosses the region. But the timing of this front is so late that we probably experience a much weakened version of what was stronger to our north and west, and this will come through Sunday night and early Monday. So while Monday may start a bit unsettled, it will be a much cooler day with dry weather returning – temperatures about 20 degrees lower than Sunday, and much lower dew point air moving in after a somewhat humid start. I’m a little nervous about that front not getting that far to the south and a wave of low pressure that may keep it cloudier for more of Monday, and even threatening some showers, but for now staying optimistic with a sun/cloud blend and drier air – just know that my Monday outlook is lower confidence. High pressure to the north will turn the wind northeast by Tuesday and while I expect fair weather, it should be rather cool, especially in comparison to what we had just gone through over the weekend.

TODAY: Mostly cloudy start coastal areas as well as southeastern NH and northeastern MA followed by a sun/cloud mix trending sunnier these areas while other areas that start with sunshine keep it with just a few clouds. Highs 68-75 coast, 75-82 inland. Wind E shifting to S up to 10 MPH eastern MA and southern NH, S-SW up to 10 MPH elsewhere.

TONIGHT: Clouds return. Showers and possible thunderstorms favoring areas near and south of I-90 from west to east late evening / overnight. Patchy fog forming especially behind any shower activity. Lows 58-65. Wind S-SW 5-15 MPH but brief stronger gusts can occur near any thunderstorms.

SATURDAY: Areas of low clouds and patchy fog to start, then turning sunny. Highs 90–97 except 83-90 East Coast beaches and just inland from South Coast, 76-83 South Coast / Cape Cod. Becoming more humid – dew point rising to 60s. Wind SW 5-10 MPH but weak sea breezes possible eastern shores.

SATURDAY NIGHT: Mostly clear. Patchy ground fog. Lows 63-70. Humid – dew point 60s. Wind SW 5-15 MPH.

SUNDAY: Mostly sunny. Only a slight chance isolated afternoon thunderstorms. Highs 91-98, hottest interior valleys, but 84-91 East Coast beaches and just inland from South Coast, and 77-84 South Coast / Cape Cod. Humid – dew point middle to upper 60s. Wind SW 5-15 MPH, but local weak sea breezes eastern shores.

SUNDAY NIGHT: Variably cloudy. Chance of showers and thunderstorms. Patchy fog. Lows 65-72. Humid – dew point 60s. Wind SW 5-15 MPH, higher gusts.

MONDAY: Sun/cloud mix. Chance of a shower early. Highs 75-82. Less humid. Wind W-NW 5-15 MPH.

MONDAY NIGHT: Clearing. Lows 50-57. Wind N 5-15 MPH.

TUESDAY: Mostly sunny. Highs 60-67, coolest coast. Wind NE 10-20 MPH.

DAYS 6-10 (MAY 25-29)

Cool start, fair weather holds May 25 with high pressure to the north. Warmer air attempts a come-back with some unsettled weather possible May 26-27. Drier and warmer weather possible by later in the period which includes the start of Memorial Day Weekend.

DAYS 11-15 (MAY 30 – JUNE 3)

Overall pattern dry, zonal flow, but brief wet weather threats with air mass changes. Temperatures variable, averaging near to slightly above normal.

Thursday May 19 2022 Forecast (7:48AM)

DAYS 1-5 (MAY 19-23)

Big weather changes will take place over the next few days from a cool and damp day today to the full feel of mid summer for the weekend before we break the 2-day hot spell by Monday. How do we get from here to there? Today, a warm front will approach from the southwest with a cool air mass in place, overrunning taking place and producing some rainfall, especially this morning and midday. The front won’t really pass by us at all today so we’ll keep the clouds around even after the rain exits, but there is the chance of another shower later in the day or early this evening as another quick-moving disturbance moves by at upper levels. While we work drier air into the region at mid and upper levels we’ll clear out by early Friday, but that day while warmer won’t introduce us to the summer heat quite yet, as the actual frontal boundary will take its time and won’t really get by the region until sometime at night, at which time one more disturbance may bring a renegade batch of showers or even thunderstorms to the region. After that, the heat is on for the weekend, and with high pressure centered to the south of our area supplying it, the humidity levels will also increase. With a lot of outdoor activities that go on at this time of year on weekends, anybody planning on being outside for any length of time will have to prepare for it with the use of sun screen and especially staying hydrated! We’ve talked about a cold front putting an end to the short-lived hot spell, and that will happen, but the front’s timing looks late enough for Sunday to be a fully hot day and a shower/thunderstorm threat holding off til evening or even sometime at night to early Monday, before we bring in a drier and cooler air mass for the start of next week.

TODAY: Cloudy through midday with periods of rain. Mostly cloudy thereafter with just a chance of a passing shower. Highs 57-64. Wind SE-S 5-15 MPH, higher gusts in the afternoon.

TONIGHT: Mostly cloudy. A passing shower possible early. Patchy fog overnight. Lows 50-57. Wind SE-S 5-15 MPH.

FRIDAY: Early clouds and possible patchy fog, then mostly sunny. Highs 68-75 coast, 75-82 inland. Wind S-SE 5-15 MPH.

FRIDAY NIGHT: Mostly clear. Lows 58-65. Wind S-SW 5-15 MPH.

SATURDAY: Mostly sunny. Highs 88-95 except 80-87 some eastern beaches and near the South Coast except 73-80 immediate South Coast and Cape Cod. More humid – dew point rising into 60s. Wind SW 5-15 MPH.

SATURDAY NIGHT: Mostly clear. Patchy ground fog. Lows 63-70. Humid – dew point 60s. Wind SW 5-15 MPH.

SUNDAY: Mostly sunny. Highs 90-97, cooler shoreline especially South Coast. Humid – dew point upper 60s. Wind SW 5-15 MPH, higher gusts.

SUNDAY NIGHT: Variably cloudy. Chance of showers and thunderstorms. Patchy fog. Lows 65-72. Humid – dew point 60s. Wind SW 5-15 MPH, higher gusts.

MONDAY: Sun/cloud mix. Chance of a shower early. Highs 75-82. Less humid. Wind W-NW 5-15 MPH.

DAYS 6-10 (MAY 24-28)

This 5-day period will be a little more unsettled as the frontal boundary that goes by will be nearby and we’ll have some disturbances moving along it and a bit of a battle between warm to hot weather to our south and Canadian coolness.

DAYS 11-15 (MAY 29 – JUNE 2)

Overall pattern dry, zonal flow, but brief wet weather threats with air mass changes. Temperatures variable, averaging near to slightly above normal.

Wednesday May 18 2022 Forecast (7:44AM)

DAYS 1-5 (MAY 18-22)

High pressure builds toward the region today with dry, bright, breezy weather. The high moves right across our area this evening when we’ll finally have lost the breeze and clouds start to move in ahead of an approaching warm front. This front will take its time moving through the region on Thursday, so expect a generally cloudy day, but most of the rain with the warm front will be on the light side and occur in the morning. Friday warms up behind this front, and then with stronger high pressure offshore and a cold front hanging off to the northwest we will have a taste of summer Saturday into Sunday before that front swings through at some point on Sunday, with a shower and thunderstorm threat, breaking the brief hot spell by the end of the weekend.

TODAY: Mostly sunny. Highs 66-73. Wind NW 5-15 MPH, few higher gusts.

TONIGHT: Clouding up. Chance of light rain overnight. Lows 51-58. Wind variable up to 10 MPH.

THURSDAY: Cloudy through midday with periods of rain. Mostly cloudy thereafter. Highs 57-64. Wind SE-S 5-15 MPH, higher gusts in the afternoon.

THURSDAY NIGHT: Partly cloudy. Lows 55-62. Wind SW up to 10 MPH.

FRIDAY: Mostly sunny. Highs 75-82. Wind SW 5-15 MPH.

FRIDAY NIGHT: Mostly clear. Lows 55-62. Wind SW 5-15 MPH.

SATURDAY: Partly cloudy. Highs 85-92, cooler South Coast. Wind SW 5-15 MPH.

SATURDAY NIGHT: Partly cloudy. Lows 63-70. Wind SW 5-15 MPH.

SUNDAY: Partly sunny. Chance of showers and thunderstorms, mostly in the afternoon. Highs 85-92. Wind SW 10-20 MPH.

DAYS 6-10 (MAY 23-27)

A shot of cooler/dry air May 23. Wave of low pressure brings a chance of rain May 24. Variable weather with a boundary nearby, in and out of clouds with a few shower threats May 25-27.

DAYS 11-15 (MAY 28 – JUNE 1)

Overall pattern dry, zonal flow, but brief wet weather threats with air mass changes. Temperatures variable, averaging near to slightly above normal.

Tuesday May 17 2022 Forecast (7:52AM)

DAYS 1-5 (MAY 17-21)

Today we’ll be in the zone between low pressure to the northeast and high pressure approaching from the west. The air will be cooler drier than yesterday and the breeze will be active. Upper level low pressure crossing the region brings cold air aloft and will initiate diurnal cloud development. A few of these clouds may grow enough to produce a shower, favoring areas in southern NH and adjacent northern MA sometime this afternoon. High pressure brings dry weather Wednesday with diminishing wind. Systems are moving more quickly now and a warm front will cross the region Thursday with cloudiness, but right now it appears the rain threat will be minor and limited mostly to the morning hours. We warm up late week with another preview of summer heat arriving by the weekend as high pressure builds along the Atlantic Seaboard.

TODAY: Sunny start then a sun/cloud mix. Slight chance of an afternoon shower favoring northern MA and southern NH. Highs 70-77. Wind W 10-20 MPH, gusts as high as 30 MPH.

TONIGHT: Clearing. Lows 50-57. Wind W diminishing to 5-15 MPH.

WEDNESDAY: Mostly sunny. Highs 66-73. Wind NW 5-15 MPH, few higher gusts.

WEDNESDAY NIGHT: Clouding up. Chance of light rain overnight. Lows 51-58. Wind variable up to 10 MPH.

THURSDAY: Cloudy with a chance of light rain early, then mostly cloudy to partly sunny. Highs 65-72. Wind SE to S up to 10 MPH.

THURSDAY NIGHT: Partly cloudy. Lows 55-62. Wind SW up to 10 MPH.

FRIDAY: Mostly sunny. Highs 75-82. Wind SW 5-15 MPH.

FRIDAY NIGHT: Mostly clear. Lows 55-62. Wind SW 5-15 MPH.

SATURDAY: Mostly sunny. Highs 85-92, cooler South Coast. Wind SW 5-15 MPH.

DAYS 6-10 (MAY 22-26)

Another preview of summer heat ends with a cold front and shower/t-storm threat on May 22. Cooling to more seasonable or even slightly cooler than normal after that. Watching for a low pressure wave with rain threat around May 24 – moving faster than current medium range guidance shows.

DAYS 11-15 (MAY 27-31)

Overall pattern dry, zonal flow, but brief wet weather threats with air mass changes. Temperatures variable, averaging near to slightly above normal.

Monday May 16 2022 Forecast (7:48AM)

DAYS 1-5 (MAY 16-20)

The summer preview hangs on today with some warmth and humidity in place, but a cold front will put an end to that as it swings through from west to east this evening. Showers and thunderstorms can pop up in some unstable air ahead of the front, mainly away from the coast, during the day today, and more showers/storms will be generated by this front but the heaviest activity and greatest threat of strong to severe storms will occur west of the WHW forecast area with a weakening version of these moving through here this evening. Tuesday, drier air arrives but with upper level low pressure and a surface trough to cross the area from west to east we can still see a shower pop up, especially during the afternoon. High pressure brings dry weather midweek, breezy Wednesday as the high will be west of us, and more tranquil Thursday as the high moves overhead. Friday, a warm front moves through and high pressure builds to our south, with a warm-up occurring, although it looks mainly dry with no rain threat.

TODAY: Partly sunny. Isolated midday and afternoon showers and thunderstorms favoring areas west and north of Boston. Highs 76-83, cooler South Coast. Humid – dew point lower to middle 60s. Wind S to SW 5-15 MPH.

TONIGHT: Variably cloudy. Chance of showers and possibly a thunderstorm evening. Humid early, then drying. Lows 51-58. Wind W 5-15 MPH, higher gusts.

TUESDAY: Sun/cloud mix. A passing shower or thunderstorm is possible in the afternoon. Highs 70-77. Wind W 10-20 MPH.

TUESDAY NIGHT: Clearing. Lows 50-57. Wind W 5-15 MPH.

WEDNESDAY: Mostly sunny. Highs 66-73. Wind NW 5-15 MPH, few higher gusts.

WEDNESDAY NIGHT: Clear. Lows 47-54. Wind NW diminishing to under 10 MPH.

THURSDAY: Sunny. Highs 70-77, coolest coast. Wind variable up to 10 MPH with coastal sea breezes.

THURSDAY NIGHT: Partly cloudy. Lows 50-57. Wind S up to 10 MPH.

FRIDAY: Partly sunny. Highs 75-82. Wind S 5-15 MPH.

DAYS 6-10 (MAY 21-25)

Fair and warm to hot weather with high pressure in control and centered south of the region May 21. Watching for a frontal boundary to move across the region during May 22 and/or 23 with a shower threat and a cooling trend. Some chance of rainfall later in the period as a low pressure area approaches and the boundary hangs nearby.

DAYS 11-15 (MAY 26-30)

A couple shower threats exist, but overall pattern still looks dry despite this. Temperatures near to above normal with weak ridging along the East Coast and a trough in the Midwest.

Sunday May 15 2022 Forecast (8:47AM)

DAYS 1-5 (MAY 15-19)

I hope you enjoyed yesterday’s summer preview with lots of sun and warm temperatures. Of course some coastal areas were cooler, as would be expected where wind came off water at this time of year, but even those areas were considerably warmer than during the many days of easterly air flow last week, so they did not completely lose out. During last night, the low pressure that was part of that blocking pattern, in the process of the pattern’s break-down, finally made its way north northeastward and up into southern New England, and will complete its journey across our region today. What this does to us is make our air flow a little more southerly, and with that and more cloudiness today we’ll see temperatures a few to several degrees cooler than yesterday, with 80+ the exception instead of the rule. While this happens though, the dew point will still be on the higher side, around 60, so you’ll still notice that higher humidity. The shower activity with the arrival of the low pressure area has exited the region, but with the air somewhat unstable both today and this evening we can see some pop up showers and even an isolated thunderstorm in a few locations. but the coverage on these will be fairly low, so not everybody will see them, and areas that do will not be impacted for long. This brings us to tonight’s total lunar eclipse. This is a long-duration eclipse, starting just after 9:30 p.m. tonight and ending just before 3:00 a.m. Monday. The WHW area will experience totality from around 11:30 p.m. Sunday to about 1:00 a.m. Monday, with a peak totality at 12:11 a.m. … but will we see it? We’re not going to have a 100% clear sky. We’ll be contending with a variable amount of cloud cover, but what may help is that a little bit of drying will take place as that low pressure area will be north of us, and the wind will have shifted a little more to the west. Some of the short range guidance which simulates the cloud cover is showing some pretty decent gaps in the cloud coverage, which if true could allow many of us to at least get periodic unobstructed viewing of the event. The long-duration of the event also increases the odds. Fingers crossed! Back to the weather. We’re not done with our warm/humid summer preview yet as we get to Monday, as we’ll be in the air mass ahead of an approaching cold front. As is typical for this time of year, while the front brings the threat of showers and thunderstorms, some of the storms potentially severe, the greatest severe threat will be mainly west of the WHW forecast area as our area will have a stabilizing influence from a southerly wind off the still cool water to the south. However we should be on the lookout for at least the chance of passing downpours / t-storms with possible gusty wind as we get into late Monday afternoon and evening. Once that front goes by, that threat ends, and dew point drops, and the temperatures does as well, but modestly. Tuesday will be a “cooler” day but still quite nice with many areas reaching or exceeding 70. However there will be a pool of colder air above and a surface trough that has to swing through the region from west to east during the afternoon hours, and this could trigger the development of showers and even a few thunderstorms, even with some hail potential due to the colder air above us. If this takes place it would be a fairly short-lived event for any given location. Canadian high pressure approaches the region on Wednesday with fair, breezy, and seasonably cool weather, and then the high moves right over us on Thursday which in terms of sunshine and comfortable air is going to likely end up as the pick of the week, unless you like it warmer to hotter. More to come in the DAYS 6-10 section about that. First, the details for the next 5…

TODAY: Lots of clouds, intervals of sun, and a slight chance of a passing shower or isolated thunderstorm especially during the afternoon hours. Highs 68-75 coastal plain, coolest South Coast, and 75-82 over inland areas. Humid – dew point near 60. Wind S 5-15 MPH.

TONIGHT: Variably cloudy. A passing shower and slight chance of a thunderstorm evening. Patchy fog overnight. Lows 60-67. Humid – dew point near 60. Wind S 5-15 MPH.

MONDAY: Variably cloudy. Chance of showers and possible thunderstorms, especially late-day. Humid – dew point lower to middle 60s. Highs 76-83 except cooler South Coast Wind S-SW 5-15 MPH, higher gusts.

MONDAY NIGHT: Variably cloudy. Chance of showers and possibly a thunderstorm evening. Humid early, then drying. Lows 51-58. Wind W 5-15 MPH, higher gusts.

TUESDAY: Sun/cloud mix. A passing shower or thunderstorm is possible in the afternoon. Highs 70-77. Wind W 10-20 MPH.

TUESDAY NIGHT: Clearing. Lows 50-57. Wind W 5-15 MPH.

WEDNESDAY: Mostly sunny. Highs 66-73. Wind NW 5-15 MPH, few higher gusts.

WEDNESDAY NIGH: Clear. Lows 47-54. Wind NW diminishing to under 10 MPH.

THURSDAY: Sunny. Highs 70-77, coolest coast. Wind variable up to 10 MPH with coastal sea breezes.

DAYS 6-10 (MAY 20-24)

High pressure ridging building over the region including surface high pressure to the south means fair weather and a significant warm-up May 20-22 including the first chance of 90+ temperatures some areas on the May 21-22 weekend. Later in the period watching for a frontal boundary slipping down from the north and a wave of low pressure bringing a fairly rare rain chance.

DAYS 11-15 (MAY 25-29)

A couple shower threats exist, but overall pattern still looks dry despite this. Temperatures near to above normal with weak ridging along the East Coast and a trough in the Midwest.

Saturday May 14 2022 Forecast (8:27AM)

DAYS 1-5 (MAY 14-18)

Our weekend will feature a summer preview – not hot, but quite warm away from any ocean’s influence, as we have a southwesterly flow today and a bit more southerly on Sunday. Today will be the warmest day in many areas by a few degrees. There is going to be a variety of clouds sharing the sky, with low level stratus clouds often flirting with the South Coast, and sometimes dominating there. A shield of higher clouds will start to overspread the sky as today goes on from southwest to northeast, and thickens and lowers a little bit tonight, enough to bring some showers through the region during the overnight hours and first thing on Sunday. This is actually the remnants of that low pressure area that sat to our south for many days during the blocking pattern during the past week. As the block has been breaking down, that low pressure area moved westward, then northward, and will be making a transition to a disturbance joining a more west to east jet stream at higher latitudes, but it has to pass by us in the process. The good news is we get rid of it for most of Sunday, which looks like quite the nice day after we get rid of the earlier more extensive clouds. However again we have to watch for more stubborn lower clouds at the South Coast due to the southerly air flow. Both today and Sunday run a small chance of seeing a couple showers pop up over inland locations, but this is a very low chance that is not worth altering any outdoor plans over other than simply keeping an eye on the radar. Also, with the warmer weather, many people may want to try to sneak in an early beach day. If you do, please keep in mind that it is only mid May and the ocean water temperatures are as cold as the upper 40s to lower 50s. This is water you don’t want to immerse yourself in for more than a minute or two, if you’re brave enough to do even that. Water that cold can impact you quickly and impair muscle function. Also worthy of mention are tree pollen counts which will be very high the next few days with the lack of general rainfall in the forecast – so allergy sufferers take note. Sorry for the more negative sounding information, but it’s important to note these potential issues. Something a little more fun to talk about: A total lunar eclipse that occurs on Sunday night / early Monday. The full Flower Moon this year will be eclipsed from the 9 p.m. hour Sunday to nearly 3 a.m. Monday, with a total phase that lasts nearly 90 minutes from about 11:30 p.m. to about 1:00 a.m. Although we are not expecting a totally clear sky, the variable cloud cover across most of the region should allow some visibility for this event. Plan accordingly! More about this in tomorrow’s blog post. Back to the forecast – our preview of summer continues Monday with moderate to high humidity for this time of year and an approaching cold front, which may trigger some shower and thunderstorm activity before it passes by. We’ll see a return to cooler weather with lower humidity for Tuesday and Wednesday. On Tuesday, and upper level cool pool and surface trough will at least trigger clouds and may produce a shower or even an isolated thunderstorm in a day that will otherwise be generally rain-free but fairly breezy. High pressure approaches on Wednesday and while we will still have a bit of a breeze to contend with, it will be quite pleasant – a land breeze for the region as opposed to the chillier onshore flow we had not so long ago.

TODAY: Sun/cloud mix. Remote chance of an isolated afternoon shower inland locations. Highs 72-79 coastal plain except cooler South Coast, 80-87 inland with warmest in valley areas west and north of Boston. Moderately humid – dew point near 60. Wind SW 5-15 MPH.

TONIGHT: Mostly cloudy. Chance of showers. Patchy fog. Lows 58-65. Moderately humid – dew point upper 50s to near 60. Wind S 5-15 MPH.

SUNDAY: Lots of clouds and a possible shower early morning, then a sun/cloud mix and a slight chance of isolated afternoon showers inland, mainly well west of Boston. Highs 75-82 inland, cooler coastal areas. Moderately humid – dew point around 60. Wind S 5-15 MPH.

SUNDAY NIGHT: Variably cloudy. Patchy fog. Lows 58-65. Moderately humid – dew point upper 50s to lower 60s. Wind S 5-15 MPH.

MONDAY: Variably cloudy. Chance of showers and possible thunderstorms, especially late-day. Humid – dew point lower to middle 60s. Highs 76-83 except cooler South Coast Wind S-SW 5-15 MPH, higher gusts.

MONDAY NIGHT: Variably cloudy. Chance of showers and possibly a thunderstorm evening. Humid early, then drying. Lows 51-58. Wind W 5-15 MPH, higher gusts.

TUESDAY: Sun/cloud mix. A passing shower or thunderstorm is possible. Highs 70-77. Wind W 10-20 MPH.

TUESDAY NIGHT: Clearing. Lows 50-57. Wind W 5-15 MPH.

WEDNESDAY: Mostly sunny. Highs 68-75. Wind NW 5-15 MPH, few higher gusts.

DAYS 6-10 (MAY 19-23)

High pressure moves overhead with fair, mild, and tranquil weather May 19, then the high shifts offshore and we remain mainly dry but warm up later next week (May 20-21). By the time we get later into the period there are hints of high pressure in eastern Canada battling with high pressure to the south in the Middle Atlantic. This can set up a back-door frontal passage and a cooler shot of air from the Canadian Maritimes of the high to the north is strong enough, or a bit of an unsettled stretch of the boundary comes in and sits nearby. Obviously, it’s far too soon to speculate any further than that.

DAYS 11-15 (MAY 24-28)

Watch early period for an air mass battle and potential unsettled weather. Overall, dry trend should win out and we end up mainly fair.

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