LOUISVILLE, Ky. —

A Freeze Warning goes into effect Friday for much of the Louisville area, including parts of southern Indiana and central Kentucky, as temperatures drop below freezing overnight in many areas.

Because of that, Friday is an impact weather day.

Hearst Owned Freeze Warning

Freeze Warning : 2 a.m. to 9 a.m. Friday.

Lows will be dipping into the 30s.

Hearst Owned

During clear, calm nights like this, heat from the ground escapes quickly into the air above. Because the air near the surface loses warmth fastest, temperatures right at ground level can be several degrees colder than what the thermometer reads a few feet higher.

That’s why frost forms on grass, rooftops, and car windshields first — and why plants close to the ground are especially vulnerable.

Cold weathe

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