Springfield, Illinois – Memorial Day weekend plans across Illinois could get damp for some, especially in areas south of Interstate 72, where scattered showers are expected through Tuesday.
According to the National Weather Service in Lincoln, a weak system tracking mainly to the southwest will increase rain chances for the southern half of the state starting Sunday, with isolated sprinkles possible tonight over western Illinois. Temperatures are forecast to remain below seasonal averages through Tuesday, with highs ranging from the upper 60s to low 70s.
Cities like Decatur, Effingham, and Carbondale have a 20–40% chance of rain through early next week, particularly during the afternoon and evening hours. Northern locations including Bloomington, Peoria, and Galesburg will likely remain dry through the holiday weekend. Saturday appears to be the clearest day state-wide.
Residents planning outdoor activities should keep an umbrella handy, especially in southern counties. Drivers are advised to stay updated on changing conditions and avoid flooded roads.
The National Weather Service will issue further updates as the system progresses. Rain chances peak Tuesday before clearing midweek.
