For the second time in a week, we are cleaning up from thunderstorms that produced water spouts and perhaps scattered tornadoes from Connecticut to Cape Cod Monday. That weather system is now racing out to the North Atlantic toward the northeast.
High pressure from Canada brought back colder air overnight with temperatures starting Tuesday in the 30s north to low 40s along the south coast.
Sunshine will mix with instability cloudiness midday, for a bright and brisk Tuesday, high temperature 30s and 40s north, 40s to lower 50s south. Wind from the northwest will be gusting 20 to 30 mph, diminishing late. With a clear sky, we should cool to the 20s and 30s for a cold start for Halloween Wednesday.
A warm front in northern New England may generate a few showers or a brief wintry mix and for northern Vermont, New Hampshire, into Maine. But for southern New England, we should see sunshine for several hours, including at the Rolling Rally for the Boston Red Sox.
Wind will be from the south allowing the temperature to rise to nearly 50 degrees north and close to 60 degrees south by late in the day. The trick-or-treat forecast looks mostly cloudy with just a chance for a shower, temperatures holding in the 50s south, 40s north.
A weather front is going to stall from New England all the way to Texas late Wednesday night into the weekend. That means a few days with clouds and showers, and also the possibility of some heavier rain, especially Friday. We may even have to deal with thunderstorms and gusty downpours.
New England will be divided with temperatures in the 60s to nearly 70 degrees south, but only in the 40s and 50s north. That front should move out for the weekend allowing for increasing sunshine and seasonable whether by Saturday afternoon and Sunday.