Freeze Warning Early Thursday Before Temps Warm Again

ILLINOIS — A freeze warning has been issued for most of the Chicago area as sub-freezing temperatures are expected early Thursday according to the National Weather Service.

A frost advisory was issued for 1 to 9 a.m. Thursday for Cook and Lake counties, while all other Chicago-area counties are under a freeze warning from 1 to 9 a.m. Thursday.

Temperatures as low as 28 degrees are possible, and the frost and freeze conditions could kill crops and sensitive vegetation, the weather service said.

The weather service advised covering sensitive plants or bring them indoors if possible.

"Widespread frost and near to sub-freezing temperatures are expected again tonight away from Chicago and the lakeshore, resulting in an end to the growing season for much of the area," the weather service said on its Facebook.

However, the cooler temperatures won't stick around for long, as temperatures will warm back into the 70s by the weekend. According to the current forecast, the high will be 66 on Thursday, 70 on Friday, 73 on Saturday and 75 on Sunday.