Temperatures are dropping across the northern United States this week.
Pennsylvania and the rest of the Northeast are headed into a period of unusually cold weather, thanks to the polar vortex .
Temperatures will drop to a low of 23 degrees overnight tonight, according to the National Weather Service in State College.
The forecast then predicts a high of 38 degrees on Thursday, followed by a low of 14 degrees Thursday night combined with wind gusts of up to 20 miles per hour.
There’s also a chance of precipitation on Friday, as a storm sweeps across the eastern United States.
AccuWeather reports that this band of precipitation “will tap into enough cold air to produce ice and snow from portions of Oklahoma, Missouri and Arkansas during Thursday night to New Jersey, southeastern New

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