Jun 17, 2015 10:28 PM
NH1 Chief Meteorologist
With high pressure parked off the coast Thursday, and front stalled well south of New England, expect a mostly dry day with a mild light southerly breeze and highs climbing back into the 70's. While skies will be partly sunny, there will be times of clouds which will have a tendency to thicken a bit more by afternoon with an approaching cold front. Clouds are from westerly winds aloft high in the atmosphere blowing off the tops of weakening thunderstorms south of New England. Most of the clouds will be high-mid level clouds. So filtered sunshine on Thursday is likely. There is a risk of an isolated late shower across the north country after 3 PM Thursday. The main event will come Thursday night along with a cold front which will slide across new England during the overnight hours. This front may trigger a shower in it's passage, with the best chance of a shower, or downpour across the north country after midnight.
Friday will start off a bit damp with some clouds, but rapid clearing is likely by the mid morning. The cold front will quickly pull off the coast, with building high pressure behind it. Skies will become mostly sunny Friday with seasonal temperatures in the 70's. The warm spot will be in Southern Hew Hampshire and the coast, cooler in the hills. The cooler air directed into New England from the high under NW wind flow will allow will allow temps to drop into the 40's overnight for the early morning on Saturday. 30's may be found in the foothills and valleys Saturday morning so if you are planning on camping be advised it could start off chilly. Saturday will easily be the pick of the weekend with high pressure directly overhead. Sunshine and mid 70's, low humidity and light winds.
Sunday is the day we will have to watch. The remnant of Bill will merge with a cold front which will slowly cross the region Sunday and Sunday night. The day will start off dry, but scattered showers should begin to develop around midday with the potential for heavier downpours during the afternoon. With dewpoints climbing into the 60's and the additional tropical moisture in play, this is a day where some heavy rain may occur. The heaviest weather appears to be in Southern new England, but some of that heavy rain will likely push inot SNH too. So if you have outdoor plans Sunday, please be advised there will be changes, a threat of rain and it is important to be weather aware to pay attention to the forecasts.
In terms of any high heat in the 80's or 90's? Not happening. At least through the end of the month. It is an active pattern with a series of lows tracking through the northern states which will suppress any big warm up or build up of high humidity through the rest of June. Several chances of showers along the way with sunny days in between. Not too shabby.
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