DAYS 1-5 (JUNE 7-11)<\/p>\n\n\n\n
Seven days into June, but after the last few days you’d think it was late June or July, as we are in the midst of an early-season heatwave. But the end is in sight! So far, the humidity has been kept in check, with dew point temperatures staying several degrees below the oppressive threshold. That will continue today, however today will probably be the hottest day, temperature-wise, as we have the maximum amount of sunshine and the peak upper level ridging, with surface high pressure to the south pumping in the heat. There will be a weak surface trough sneaking into western portions of the WHW forecast area this afternoon and evening extending from a disturbance moving into the Great Lakes, and this may trigger a couple isolated showers or brief thunderstorms later today but that is a fairly remote chance. Tuesday, the heat may come down a couple notches on the thermometer in general, but you won’t notice it, because the dew point will climb a few, so it will essentially feel as hot and maybe even more uncomfortable to those sensitive to higher humidity. There will be an ever-so-slight shift of the upper ridge to the west while the surface high keeps sending in the heat and humidity. The surface trough will hang around extending from the disturbance lifting from the Great Lakes to the St. Lawrence Valley, while increased moisture arrives from the southwest, having traveled all the way from the southern Plains with a weak upper level disturbance cutting through the high pressure ridge. This subtle increase in moisture and lowering of temperatures aloft, combined with solar heating, will lead to a slightly better chance of showers and thunderstorms, which will be isolated to scattered across more of the region Tuesday afternoon and early evening. Again though, there will probably be many locations that are missed by this activity, so don’t count on one of these to water your garden for you because it may not happen. If it does, it won’t hang around too long and any activity will fade away with sunset, leaving us with a very warm and sticky night as dew points reach their maximum for this stretch of summer weather. The high humidity will continue into Wednesday ahead of an approaching cold front, which will be moving southward out of eastern Canada. As previously mentioned, the timing of this front is the primary determining factor in how hot we get Wednesday. While some increased cloud cover will help limit us from reaching the maximum potential temperature for the air mass, the frontal boundary will probably not make it into the region until late afternoon or evening at the earliest, so it will still be a very warm to hot and humid day. Showers and thunderstorms are most likely on this day of the next three for any given location. A few air mass showers and storms can pop up ahead of the front, but the front itself may help to organize a broken to possibly solid line of convective activity as it pushes through later in the day or at night. Will have to monitor closely that day for detailed timing and impact of activity, but not expecting any widespread severe weather due to lack of parameters for it. And then a big change comes! Behind the front, high pressure builds out of Canada for Thursday with a northeasterly air flow of cooler air with lower dew points, so it will feel much more comfortable. I’d love to tell you that we’re going to see two days like this, but Friday’s forecast is not that clear-cut. The front, after it comes through, is going to put its breaks on just south of New England and sit there, and a disturbance coming eastward from the Midwest may initiate a wave of low pressure on it. With high pressure to the north, and a low pressure wave moving eastward along a nearby front, I can’t rule out a period of rain at some point on Friday. This is not currently the scenario shown by all guidance, so there is some doubt, but for now I am going to lean toward this scenario, not quite like Memorial Day Weekend, but clouds, cool air, and some wet weather in the forecast, with the distinct possibility of having to tweak that outlook. Also of note, the sun will rise partially eclipsed on Thursday morning (June 10), so if the sky is clear enough we’ll be able to see that celestial spectacle. Updates to come…<\/p>\n\n\n\n
TODAY: Sunny morning – any low clouds near South Coast dissipating. Sun\/cloud mix afternoon\/evening – slight chance of an isolated shower or brief thunderstorm southwestern NH, central MA, and northeastern CT. Highs 90-97 except cooler South Coast and Cape Cod. Moderate humidity – dew point middle 60s. Wind SW 5-15 MPH, a few gusts around 20 MPH.<\/p>\n\n\n\n
TONIGHT: Variably cloudy evening. Mostly clear overnight except areas of low clouds and fog redeveloping near the South Coast. Lows 67-74. Higher humidity – dew point upper 60s. Wind SW up to 10 MPH.<\/p>\n\n\n\n
TUESDAY: South Coast low clouds and fog diminishing during the morning, otherwise a sun\/cloud mix. Isolated to scattered showers and thunderstorms possible mainly mid to afternoon to about sunset, with any of these possibly producing torrential downpours and quick localized street flooding. Highs 88-95 except cooler South Coast and Cape Cod. Very humid – dew point near 70. Wind SW 5-15 MPH, can be briefly variable and gusty around any showers\/storms.<\/p>\n\n\n\n
TUESDAY NIGHT: Partly cloudy. Areas of fog especially South Coast and interior lower elevations. Lows 68-75. Very humid – dew point near 70. Wind WSW under 10 MPH.<\/p>\n\n\n\n
WEDNESDAY: Partly sunny. Chance of showers and thunderstorms in the afternoon and evening. Highs 85-92, cooler South Coast \/ Cape Cod. Very humid – dew point near 70. Wind WSW 5-15 MPH, a few higher gusts possible.<\/p>\n\n\n\n
WEDNESDAY NIGHT: Mostly cloudy with a chance of showers\/thunderstorms early, then clearing. Patches of ground fog forming. Lows 60-67. Lowering humidity – dew point falling through 60s. Wind shifting to N 5-15 MPH then diminishing.<\/p>\n\n\n\n
THURSDAY: Sun and passing clouds. Highs 75-82, coolest eastern coastal areas through Cape Cod. Drier – dew point falling through 50s. Wind NE 5-15 MPH.<\/p>\n\n\n\n
THURSDAY NIGHT: Clear inland, coastal clouds possible. Lows 51-58. Dry – dew point upper 40s. Wind NE to E up to 10 MPH.<\/p>\n\n\n\n
FRIDAY: Clouding over. Chance of rain in the afternoon. Highs 65-72 but may turn cooler late-day. Wind E 5-15 MPH.<\/p>\n\n\n\n
DAYS 6-10 (JUNE 12-16)<\/p>\n\n\n\n
Another push of high pressure from eastern Canada should bring dry weather and cooler than normal temperatures for June 12 to start the weekend, followed by a warm-up June 13 to end the weekend, with the possibility of the arrival of some rain showers with a system from the west. Generally west-to-east flow expected to evolve thereafter with dry\/mild weather June 14, a warm front bringing clouds and showers June 15, and a cold front bringing the risk of showers\/thunderstorms June 16 based on current medium range timing, but of course tweaks and changes are possible to this early outlook for mid June.<\/p>\n\n\n\n
DAYS 11-15 (JUNE 17-21)<\/p>\n\n\n\n
Continuation of zonal flow pattern with variable temperatures not overly far from seasonal normals, and a couple chances for showers\/t-storms with passing disturbances as we head toward the summer solstice (which occurs late at night on June 20).<\/p>\n","protected":false},"excerpt":{"rendered":"
DAYS 1-5 (JUNE 7-11) Seven days into June, but after the last few days you’d think it was late June or July, as we are in the midst of an early-season heatwave. But the end is in sight! So far, the humidity has been kept in check, with dew point temperatures staying several degrees below … Continue reading Monday June 7 2021 Forecast (7:40AM)<\/span>