DAYS 1-5 (MAY 18-22)<\/p>\n\n\n\n
Stacked low pressure (low pressure surface and aloft over the same area) will drift east southeast from Ontario \/ Maine to southern Atlantic Canada and the adjacent Atlantic Ocean through Monday, wandering away Tuesday as a weak ridge of high pressure builds in. The low pressure area will impact our weather through Monday with cooler, less humid air, lots of clouds, and a few passing showers – although most times will be rain-free in any given location. One detail to note: If you walk outside this morning, especially while there is still enough sun around, it will feel quite mild. This is because a surface occluded front that moved through overnight did not introduce a big change in air mass, only a modest one. The dew point has only dropped slightly, along with the temperature, but during the day today the former will continue to drop while the latter rises very little. This, combined with eventual abundant cumulus and stratocumulus cloud cover, will have the net effect of a cool-down, of course augmented by an increasingly gusty breeze on the back side of low pressure. This will set us up for a continuation of the dominant cloud \/ interval of sun type of sky on Monday, when a few additional passing showers are possible, along with a cool, gusty breeze. Yesterday, I felt a bit more optimistic about a sunnier Tuesday, but today, not so much. A forecaster can be lead astray by guidance that is showing things moving along too quickly in comparison to what actually happens. Yesterday, I had hopes that high pressure would overtake the region Tuesday enough to keep cloudiness away, but it appears that our region will still be close enough to upper level low pressure and resultant cool air above us that we will still have quite a few stratocumulus clouds about. This time, however, I can confidently keep the shower threat out of the forecast – so expect a dry day Tuesday, despite the lack of full sun. We’ll also see a breeze, though not as gusty as Monday, and cool conditions. So now you think, “ok, we paid our dues with this upper low, right? and it has to warm up and be nice next, right???” … Sorry, not correct. Our next low pressure area in the hybrid progressive \/ blocking pattern (high pressure eastern Canada, low pressure to the south), arrives at midweek. While there are some guidance differences, the general idea is a slightly elongated low pressure area will move our way via the Ohio Valley and Mid Atlantic, spreading its cloud shield into the region on Wednesday. Rain follows, along with a robust onshore flow and very cool air. This is likely to continue through Thursday, though there are some questions as to how deeply into the rain shield we end up. A little stronger high to the north could suppress the low far enough south for a lighter rainfall event. If this is not the case, a healthier soaking rainfall occurs – a May nor’easter of sorts – certainly not unprecedented but not something we see every year late in the 3rd month of meteorological spring. One definite silver lining, this likely event along with recent events continue to combine to reduce the drought \/ abnormally dry conditions that have affected the region for quite some time. I’ll continue to fine-tune the midweek forecast the next few days…<\/p>\n\n\n\n
TODAY: Cloud \/ sun mix before clouds becoming dominant. A passing shower is possible any time this afternoon \/ early evening, favoring I-90 northward. Highs 62-69. Wind W to NW 5-15 MPH, gusts 20-25 MPH.<\/p>\n\n\n\n
TONIGHT: Mostly cloudy. Lows 46-53. Wind NW 5-15 MPH and gusty.<\/p>\n\n\n\n
MONDAY: Lots of clouds \/ intervals of sun. A passing shower possible. Highs 61-68. Wind NW 10-20 MPH, gusts as high as 30 MPH.<\/p>\n\n\n\n
MONDAY NIGHT: Variably cloudy. Lows 45-52. Wind N 5-15 MPH, gusty.<\/p>\n\n\n\n
TUESDAY: Limited sun \/ lots of clouds. Highs 59-66. Wind N to NE 5-15 MPH.<\/p>\n\n\n\n
TUESDAY NIGHT: Considerably cloudy. Lows 46-53. Wind NE up to 10 MPH.<\/p>\n\n\n\n
WEDNESDAY: Cloudy. Rain arriving southwest to northeast by late-day. Highs 53-60, coolest coastal areas. Wind NE to E 5-15 MPH.<\/p>\n\n\n\n
WEDNESDAY NIGHT \/ THURSDAY: Overcast. Rain likely. Areas of fog. Temperatures fall to 45-52 then steady. Wind E to NE 10-20 MPH, higher gusts especially in coastal areas.<\/p>\n\n\n\n
DAYS 6-10 (MAY 23-27)<\/p>\n\n\n\n
Improving weather but still cool with a possible shower on May 23 as low pressure moves away. Gradually weakening upper level low pressure over the region during the Memorial Day Weekend (May 24-26) – this would promote a daily chance of showers and a few thunderstorms but also many dry hours. Another low pressure area may bring a general rainfall back by the end of the period. Temperatures run below normal in the expected pattern.<\/p>\n\n\n\n
DAYS 11-15 (MAY 28 – JUNE 1)<\/p>\n\n\n\n
A low pressure dominated cool and unsettled pattern transitions to a drier and more progressive northwest flow pattern as we head through the final days of May toward the start of June.<\/p>\n","protected":false},"excerpt":{"rendered":"
DAYS 1-5 (MAY 18-22) Stacked low pressure (low pressure surface and aloft over the same area) will drift east southeast from Ontario \/ Maine to southern Atlantic Canada and the adjacent Atlantic Ocean through Monday, wandering away Tuesday as a weak ridge of high pressure builds in. The low pressure area will impact our weather … Continue reading Sunday May 18 2025 Forecast (7:42AM)<\/span>