CHICAGO (CBS) — The heat wave in March might as well have been last summer, as temperatures apropos of winter made a return overnight.

CBS 2 Meteorologist John Boyle reports in the early morning hours, the temperature crashed to the freezing temperature of 32 degrees at O’Hare International Airport, 28 at the DuPage County Airport in West Chicago, 25 degrees at the Morton Arboretum in Lisle, 25 degrees in Lowell, Ind.; and 22 degrees in Aurora.

Under clear skies at 11:20 a.m., the temperature had rebounded to 47 at O’Hare and 45 at Midway International Airport, and 46 in Aurora. The forecast high for the day is 50 degrees.

But another freeze warning is in effect for the hours of midnight to 8 a.m. Thursday for the entire Chicago area, as temperatures are expected to drop to the 20s in many spots, and the lower 30s closer to downtown Chicago.

On Thursday, cool sunshine will again prevail, with a high of 54 degrees.

Temperatures are expected to rebound when Friday comes around, although the price to pay is a chance of rain. Boyle says the rain should hold off until after the White Sox home opener, but scattered showers and storms are expected throughout the day Saturday and Sunday.

But the good news is if you feel like running around outside in a bathing suit when it rains, you’ll feel perfectly comfortable. The high for Saturday is 71, and for Sunday 67.

And remember, it could always be worse. Both Detroit and Cleveland had snow Wednesday morning.