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Will chilly, autumn weather stick around this week in the Northeast?

By Courtney Spamer, AccuWeather meteorologist
October 16, 2018, 3:25:27 AM EDT

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A chill fell over much of the East this past weekend, with more cool weather likely this week.

Temperatures rose to near- to above-normal levels once more across eastern Pennsylvania and Maryland up to the Hudson Valley on Monday.

Following locally drenching and gusty thunderstorms on Monday night, a dip in the jet stream will make way for two separate fronts to bring in waves of cooler air: one early Tuesday and another on Tuesday night.

For many areas it will seem like the weather skipped over September and October and and went right to November.

ColdNortheast


“Some of the coldest air so far this season will come in with a front sweeping across the Great Lakes on Tuesday night,” said AccuWeather Meteorologist Steve Travis.

Normal highs in Buffalo are around 60 in the middle of October. Through October 10, the city was running 8 degrees above normal for the month, with highs regularly in the 70s and 80s.

By Tuesday, highs in western New York will be in the lower 50s and even the upper 40s by Wednesday.

Cities from Detroit to Boston to Washington, D.C., are all expected to be below normal for mid-October standards by Wednesday.

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Low temperatures on Wednesday morning could be dipping below the freezing mark for those in New England.

Afternoon temperatures will be in the 40s for much of Michigan, New York and Vermont, with only highs in the 50s for Massachusetts, Connecticut, Pennsylvania and Ohio.

While many will be able to enjoy this cool, fall day due to dry weather, some wet weather is in the forecast for others.

Static Wed NE


“When the cool air pushes over the still-warm waters of the Great Lakes, it will create lake-effect showers downwind of the lakes,” Travis added.

It could be cold enough for snowflakes to mix in with the rain showers, especially in the higher elevations during Tuesday night, Wednesday and Wednesday night. The ground may be whitened in the Adirondacks, Alleghenies, and Green and White mountains.

“Even the lower elevations in places such as Buffalo, Rochester and Syracuse could see some graupel, or snow pellets, mixing in with the rain at times,” said Travis.

Winds gusted to 45 mph across Massachusetts on Monday night, resulting in widespread tree and property damage. Similarly blustery weather will accompany the cold blast at midweek.

"For many areas, Wednesday may be the most blustery day since early last spring or late last winter," according to AccuWeather Senior Meteorologist Alex Sosnowski.

According to Sosnowski, wind gusts could exceed 45 mph, toppling trees and powerlines and causing power outages.

Static Freeze Wed Night


"AccuWeather RealFeel® Temperatures will dip to as much as 20 degrees lower than the actual temperature. Conditions are likely to bring a hard, killing freeze to much of the interior Northeast during Wednesday night," Sosnowski added.

The growing season will come to an end across the interior. However, as a consolation, allergens are likely to take a big hit, as will much of the mosquito population.

Cool air will stick around through Thursday for the Great Lakes and the Northeast. A slight rebound in temperatures is expected for Friday and the start of the weekend; however, temperatures will still be noticeably lower than they were at the beginning of the month.

Shots of cool air look to continue through October, bringing even more rounds of crisp conditions and additional chances for rain and snow across the interior.

While the overall weather pattern will bring frequent opportunities for showers of rain and snow across the interior Northeast, much of the Interstate-95 corridor will be free of rain from later Tuesday through Friday.

Download the free AccuWeather app to see the forecast in your area for the next 15 days on your mobile device.

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