A frost advisory is in effect for parts of central Pennsylvania early Friday morning, signaling the arrival of a seasonably cool autumn weather pattern.

Temperatures are expected to drop into the 20s to upper 30s in the state overnight.

Residents in the Lower Susquehanna Valley should prepare for frost conditions between 2 and 9 a.m. on Friday. The National Weather Service has issued a frost advisory for seven zones where the growing season remains active, with the highest risk in rural and agricultural areas.

In the meantime, Thursday will be mostly sunny but breezy, with daytime highs ranging from the low 50s to low 60s. Strong northerly winds could produce gusts of 20 to 30 mph, particularly in eastern portions of the forecast area.

The weekend will be warmer, with temperatures c

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