After highs in the 70s Thursday afternoon, Chicago is in for a cool down throughout the weekend.
Friday afternoon will bring a high of only 50 degrees with scattered clouds, before dropping down to the high 30s at night.
Saturday may creep down into the high 40s with even more clouds. The nighttime will bring temperatures to the high 30s.
Both days will be breezy, so those spending time outdoors should consider a light jacket. Precipitation is unlikely.
A storm will bring snow and ice that will lead to slippery travel along a 1,500-mile swath from northern Arkansas and Georgia to Maine early next week.
The coldest air of the winter will plunge southward across much of the eastern United States and will feature single-digit and sub-zero temperatures in the Northeast during Valentine's Day weekend.
A blast of arctic air will be accompanied by flurries and even a localized wall of snow in some communities in the Northeast and parts of the Midwest at the start of the Valentine's Day weekend.
Heavy rain will raise the risk of flooding across more than a dozen states in the Southeast on Presidents Day to the East Coast on Tuesday.
The dry, summerlike heat sweeping Southern California will continue through the weekend into early next week.
Umbrellas will be needed on Valentine's Day as scattered showers overspread Germany.
Savannah, GA (1899)
(12th-13th) 2 in. snowfall, one of 3 snowstorms in past 200 years that required a ruler measurement.
Great Arctic Outbreak (1899)
Great Arctic Outbreak Continues: Dallas-Fort Worth, TX -8 deg. F., all time low. Amarillo, TX - 16 deg. F., all time low. Tulia, TX -23 deg. F., tied for all time Texas low. Camp Clarke, NE -47 deg. F., state record low temp. Little Rock, AR Absolute Min. -13 deg. F.
Great Atlantic Coast Blizzard (1899)
(12th-14th) Boston. . . Storm total of 16 in. Winds gusted to 65 mph at Blue Hill Observatory on the 12th and maintained an average of 50 mph through- out the entire day. 24-36 in. reported of snow just north in vicinity of Beverly. THE BOSTON HERALD declared: "Rarely, if ever, has Boston been so completely snowbound (until Feb. 1978...) as it has been by this blizzard." At the end of the storm depth measured 23 in. in Boston... the greatest depth in 98 years of records from 1871-1969.