National Weather Service United States Department of Commerce

A line of thunderstorms is expected to develop across Missouri and Iowa late this afternoon and evening, then shift east across central Illinois late this evening and tonight. While there is a chance for thunderstorms area-wide, the greatest threat for severe thunderstorms will mainly be near and west of the I-55 corridor.
Early day cloudiness is expected to give way to some sunshine this afternoon. Winds will turn southerly and become breezy today, helping warm temperatures back to near 80F. There will be another chance for showers and thunderstorms overnight into Thursday. The remainder of the week and weekend will remain active across the region. While there will be plenty of dry periods during this time, there will be daily chances for showers and thunderstorms.