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Sep 20, 2016 11:43 PM

NH1 First Alert Weather: Summer ending. Early Season Chill Awaits

NH1 Chief Meteorologist

Well, this is IT! The last official day of summer. It has been fantastic. I am always so sad to see it go. At some point you just have to embrace the change of seasons around here! A cold front is pushing offshore this morning. A little morning fog at the coast will be possible. Any early morning fog will lift to abundant sunshine with high pressure overhead and highs climbing into the 70s and lwr 80's by afternoon and more comfortable humidity. Cooler temperatures overnight with clear skies, light winds and radiational cooling. Lows will drop into the 40's and 50's.

The first day of Fall officially arrive Thursday with the Equinox arriving at 10:21 AM.Temps will warm a bit more into the Lwr-mid 80's by afternoon with mostly sunny skies. A boundary will be stalled across the Canadian Border. This stalled front will be the dividing line between summer warmth and cooler fall-like air in Canada.

Coldest temperatures of the season arrive over the weekend... A strong cold front will gradually drift south across the region Thursday night and Friday and move well south of the area Friday night. Showers are expected ahead of this front but with limited amounts of moisture not more than around .25-.50 inches of rainfall is expected. Behind the front all models point toward the coolest air mass of the early fall season to spread over the area this weekend. The cooler air aloft along with a trough in place across the northeast becomes aligned with the low level NW flow. some gusty NNW winds are expected and should continue through Sunday as well. Highs this weekend will be in the 60's. Sunday could be even cooler with highs in the 50's and Lwr 60's with a breezy mix of sun and clouds. Temperatures could dip down to near freezing early Monday morning for our first widespread frost as winds diminish. The fall feel will last into the start of next week with highs remaining in the 60's and gradually moderating.


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