National Weather Service United States Department of Commerce

Showers and a few thunderstorms will continue to spread eastward into central IL this morning, remaining primarily west of I-55 through noon. Locally heavy rain will be possible, and could locally total up to 2 inches.
A slow moving low pressure system will move into central IL today, with periods of showers and thunderstorms lingering into Sunday. A few severe thunderstorms are possible this afternoon into evening, and locally heavy rain is possible through Saturday. Temperatures will be slightly below normal, with highs from the mid 70s to lower 80s through Monday, and lower to mid 80s Tuesday.
Periods of showers and thunderstorms can be expected across central and southeast IL today, with the strongest storms this afternoon into evening. These storms will be capable of producing isolated damaging wind gusts up to 60 mph, locally heavy downpours exceeding 2 inches, and possibly a tornado or two, mainly west of Springfield.