Onshore Winds Cool Down The Weekend

By Meteorologist Joe Joyce

A beauty of a day across New England with high pressure building in behind a backdoor front.  This barely noticeable front will push off the coast this afternoon followed by a cooler NE wind for the afternoon. Mostly sunny skies with high clouds today. Highs in the 70’s nearing 80 in the west. As winds shift east this afternoon a cooling seabreeze will help to keep temps mostly in the lwr 70’s at the coast. Seas are subsiding after 2 days of good surf thanks to hurricane Katia which may be making landfall as strong extratropical low in the British Isles Late Monday or Tuesday. Cool dry Canadian air will continue to settle in over us tonight with clear, calm conditions. Temps will drop back into the 40’s in the western valleys to Lwr 50’s elsewhere. This will be one of the coolest nights in this early cooling season.

With a stalled front south of New England, with broken scattered remnants of Lee still in play back through Ohio & PA…there is ample moisture and clouds just to our Southwest.  Some of this cloudiness will try to push back into New England Sunday as a trough  shifts east.  These overrunning clouds will increase in the afternoon after a bright Sunday morning. Thickening clouds may deposit a hit or miss shower/sprinkles  late in the day into the evening for southern New England..especially the south coast…closer to the proximity of the stalled front. With increasing clouds Sunday and Light ESE winds, temps will be cooler Sunday with temps in the 60’s coast and lwr 70’s inland.

Winds will be shifting back to the SW Monday which will allow temps to start to warm back into the 70’s to near 80. Monday night will feature the Full Harvest moon..the full moon closest to the Autumnal equinox which is officially September 23rd at 5:05 AM.

Warming SW winds right into Tuesday with increasing sunshine will drive temps into the Lwr 80s. Tuesday will likely be the best day of the week if you are looking for that waning summer warmth. Another trough will be pushing into the Great Lakes by the midweek. This will help to drive the mild SW flow into the Northeast before our next cold front arrives Wednesday. Temps in the 70’s and Lwr 80’s ahead of the front with increasing clouds. Scattered showers and storms should wait for the end of the day. Behind the front breezy NW winds with dry high  pressure from Canada will provide unseasonably chilly air into the northeast with 850 mb temps down to near 0.  Skies will be increasing with sunshine to end the week heading into next weekend which promises to have the real feel of fall. Thursday near 70, with Friday-Sunday near 65 for high temps. This will be a fall lovers dream airmass!


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