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Autumnal Preview For Last Weekend Of Summer

By Meteorologist Joe Joyce
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Just like that it is suddenly fall.

After spending the past few days with temps in the 80’s with increased humidity, this change in the airmass is most welcome and refreshing.

Watch Joe’s forecast:

As a cold front pushed off the coast last night, the unseasonal cool air began rushing in with breezy NW winds.

Check: Current Conditions | Weather Map Center | Interactive Radar

The winds are diminishing today as high pressure slides towards us, but the cooler air will continue to push into New England from Canada helping to keep highs around 60-65 degrees today with sun-filled skies.

It should be in the mid 60’s along the south coast, while most of us will remain in the lower 60’s close to 10 degrees below normal for this time of year. Groundswell from Hurricane Maria far off the New England coast is making for seas up to 4-5 feet in many area buoys.

Clear and calm conditions should allow for good radiational cooling through the evening hours. Increasing high clouds after midnight may slow the cooling a bit.

Either way, overnight lows will be dropping into the 30’s in the burbs and valleys. Frost advisories and warnings are in place across the north country where some areas will experience their first frost or freeze of the season.

The best chance of any frost in southern new England will be in the Berkshires, especially in the valleys.  Coastal areas will likely remain in the 40’s.

THE WEEKEND

High pressure will dominate through the weekend providing the cool autumn feel from Canada with temps in the mid 60’s inland and lower 60’s at the coast with light onshore winds.

Saturday will be nice but increasing high-to-mid-level cloudiness which will make for a milky appearance to the sky.  We have to watch  an upper level tough that will move across the region Sunday through early Monday.

An area of low pressure will develop off the Mid-Atlantic and track well offshore from us, but this could still mean some periodic clouds especially along the South Coast.  High pressure will remain close enough to us to provide the sunshine and mainly dry conditions.

NEXT WEEK

High pressure will begin to breakdown heading to the middle part of the week.

SW winds aloft and at the ground will allow temps to start to warm back into the lower-mid 70’s by midweek.

A weak front will wash out over us on Tuesday.

A deep upper level trough will develop over the Great Lakes Wednesday and shift east Thursday.

We will see a gradual increase of clouds through the midweek… remaining mostly dry… with the best chance of showers arriving late Wednesday, mainly at night.

Steady rain appears to develop on Thursday, but how this will all eventually pan out still has time to evolve in the next few days.  Another cool shot of air with increasing sunshine will follow in behind the rain just in time for first weekend of fall.

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