Springfield, Illinois – Thunderstorms are expected to roll into central Illinois Saturday, bringing a risk of heavy rain, damaging winds, and flash flooding that could impact travel and outdoor plans through Tuesday.
According to the National Weather Service in Lincoln, storm chances will increase to 60–70% on Saturday, with the most active cells expected south of Springfield and near I-55. Overnight chances continue into Sunday and Monday, keeping the risk of localized flooding high, especially in areas that see repeated rainfall. Heat indices will also surge into the upper 90s and low 100s, making for dangerous outdoor conditions.
Springfield, Decatur, and Champaign could all see strong thunderstorms this weekend, especially during the evening hours. Wind gusts up to 40 mph and rainfall totals over an inch are possible in isolated areas. Motorists should avoid driving through flooded roads and secure outdoor items ahead of gusty storms.
Residents are urged to stay weather-aware, limit time outdoors during peak heat hours, and monitor local alerts as conditions evolve. Portable chargers, weather radios, and backup power sources are recommended for those in flood-prone areas.
Storm chances taper midweek, but oppressive heat will build, with heat indices near 108° by Tuesday in central Illinois.
