After a thunderstorm is possible early in the week, Chicago should have partly sunny skies and below-average temperatures over the next several days.
Higher, early-week temperatures should drop near the 75 F mark at midweek. With the normal average at 84, temperatures will be much lower than normal.
The record high for this week is 106, set in 1936.
Overnight lows will vary, reaching as low as the high 50s and reaching as high as the upper 60s towards the end of the week.
An additional thunderstorm may pop up over the weekend after a humid Friday.
There should be consistent breezes around 9 miles per hour for much of the week with possible gusts up to 13 mph.
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.
As warming ocean waters continue to threaten coral reefs worldwide, researchers at the University of Hawaii have developed a plan that could reverse the rapid decline of these ecosystems.
A cruise ship was battered in a ferocious winter storm that slammed portions of southern New England with blizzard conditions.
Instead of being targeted by windstorms, the United Kingdom will have to deal with a cold snap settling in for Valentine's Day and Monday.
Southern Calif. (1992)
A 2 day rainstorm brought flooding and mudslides to the area. 12.53" of rain fall at Woodland Hills.
Cherry Hill, NJ (1999)
An F1 tornado causes significant damage to 10-15 homes.
San Francisco, CA (2001)
High only 44 degrees, record low maximum for date.