Centralia Reservoir, IL 7-Day Night Weather Forecast

Monday Night... Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the upper 70s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 103 early in the evening.

Tuesday... Sunny with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 106.

Tuesday Night... Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the upper 70s. Chance of rain 20%. Heat index values up to 105 early in the evening.

Wednesday... Mostly sunny. A chance of showers and thunderstorms, mainly in the morning. Highs in the lower 90s. Chance of rain 40%. Heat index values up to 105.

Wednesday Night... Showers and thunderstorms likely in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Lows in the lower 70s. Chance of rain 60%. Heat index values up to 100 early in the evening.

Thursday... Partly sunny in the morning, then becoming mostly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 50%.

Thursday Night... Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers and thunderstorms likely after midnight. Lows in the upper 60s. Chance of rain 60%.

Friday... Mostly cloudy with a chance of showers and thunderstorms in the morning, then partly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50%.

Friday Night... Mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Highs in the mid 80s. Chance of rain 40%.