Central Pennsylvania residents can expect a dramatic temperature swing Wednesday, with potential frost warnings for northern counties and unseasonably warm temperatures giving way to cooler conditions.

A backdoor cold front will usher in significantly cooler air Wednesday, with afternoon highs dropping to the low 60s and 70s after Tuesday’s warm temperatures in the upper 70s and low 80s.

The high temperature in Harrisburg today is supposed to be 82; tomorrow, it’s 72.

The northern mountains face the highest risk of frost Wednesday night, with temperatures potentially dipping into the mid-30s. The National Weather Service is considering a freeze watch for portions of northern Pennsylvania.

The cold front will bring clear skies and dry conditions, continuing a prolonged period of minim

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