The National Weather Service forecasts the sharpest overnight cooldown early this week, with inland frost potential increasing Tuesday night, Oct. 6, into Wednesday morning, Oct. 7.
The threat will vary sharply by location. Rural communities and higher elevations face greater risks than larger cities.
Some areas will feel the effects sooner. NWS frost advisories cover parts of western Maryland and western Virginia from midnight through 9 a.m. Tuesday.
Around New York City, lingering wind should limit frost Monday night, Oct. 5. Calmer conditions Tuesday night could allow rural and interior temperatures to fall to roughly 30 to 35 degrees, while the city stays near 50.
AccuWeather expects the season’s first widespread frost and freeze to spread eastward across the interior Northeast. Northern Pennsylvania’s mountains and New York’s Adirondacks face some of the greatest risks of a damaging freeze.
Its Wednesday map also highlights inland Connecticut and Massachusetts.
“The first widespread frost and freeze could have important consequences for agriculture across parts of the Great Lakes and Northeast,” AccuWeather expert meteorologist Alyssa Glenny said. “Sensitive vegetation could be damaged on consecutive nights, and in the coldest rural and higher-elevation locations, a freeze could effectively bring the growing season to an end.
"The timing matters for growers and anyone with vegetation that remains vulnerable to freezing temperatures.”
Sensitive plants may need covering or moving both nights indoors, AccuWeather advises.
Monday afternoon brings sunshine and northwest breezes. Tuesday stays sunny but cooler, with highs near 60 degrees across southern New England and around 65 in New York City and northeastern New Jersey.
Temperatures begin recovering Wednesday. Maryland and Virginia should reach the 70s in many areas, while the New York region also warms.
Thursday, Oct. 8, could bring temperatures near 70 in southern New England and around 75 farther south. Mainly dry weather continues Friday, Oct. 9, according to NWS forecasters.
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