Chicago weather: Clouds roll in tonight, rain arrives Sunday

CHICAGO - Cloud cover will thicken across the Chicago area tonight, setting the stage for a rainy rest of the weekend. 

Expect rain to start falling by Sunday afternoon, with conditions deteriorating as a potent weather system approaches.

The forecast for Monday and Tuesday shows a significant risk of rain—at 100%—with total accumulations ranging from 1 to 2 inches, and potentially more in some areas. 

However, the outlook improves midweek, with clear and pleasant weather anticipated.