PM Update: Cooler behind front, pleasant Halloween

Warm and moist air, which settled into the region on Wednesday Night, has been scoured out thanks to a cold frontal passage on Thursday afternoon. Sunny and warm conditions prevailed, thanks to lingering warm air near the surface, but temperatures in both the mid and low levels of the atmosphere will cool further overnight. Westerly winds took over for the southerly winds which had dominated beforehand, and will help to usher in the cooler airmass.

This trend will continue through Friday, with cooler air arriving throughout the Northeast United States. Highs will be several degrees colder than they were on Thursday. The air will feel crisp and, well, Autumn-like, with high temperatures topping out in the mid to upper 50’s with a westerly wind component.

NAM model showing highs in the mid 50's with pleasant conditions on Halloween.

NAM model showing highs in the mid 50’s with pleasant conditions on Halloween.

The upcoming weekend looks likely to be very pleasant — and Halloween will feature lovely, Autumn weather. High pressure will build in to the Northeast United States, allowing for pleasant and benign weather to take control.

The next chance for showers looks to come later on Sunday, but precipitation will be mostly transient and isn’t expected to provide any weather hazards. Perhaps most notable will be a warmup next week — occurring as a result of a large trough driving toward the West Coast of the United States. A prolonged period of above normal temperatures looks likely to set up beginning next week and continuing for several days.