A blast of arctic air could push overnight temperatures into the teens in York, Chester and Lancaster counties Wednesday night and keep things below freezing through Thursday.
The cold weather will be accompanied by clear skies and northwest winds – but no precipitation – Wednesday and Thursday, with gusts reaching as high as 23 mph.
An arctic airmass will settle southward across the area beginning on Wednesday, the National Weather Service reported on Monday, affecting the weather into Friday.
After highs in the 50s on Tuesday, Wednesday’s highs will reach only into the lower 40s.
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Wednesday’s overnight low in Rock Hill is expected to be 12 degrees, while Chester and Lancaster should see lows of about 15 degrees.
Thursday’s highs are expected to hover at or below freezing, and Thursday night’s lows should stay in the 20s.
Friday, Saturday and Sunday’s daytime highs will be back into the 40s, with overnight lows in the upper 20s.
There is little expectation of freezing precipitation until early Sunday morning, when there’s a 30 percent chance of rain or freezing rain.