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City of Centralia, ILCentralia, IL 7-Day Night Weather Forecast
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Centralia, IL Weather Forecast
Centralia, IL Weather Forecast Date: 127 AM CDT Mon Sep 14 2026
The area/counties/county of: Clinton County Il, including the cities of: Centralia and Salem.or toggle through each period.
Rest of Tonight... Partly cloudy. Near steady temperature in the mid 60s. Northeast winds 5 to 10 mph with gusts up to 20 mph.
Monday... Sunny. Highs in the upper 80s. East winds 5 to 10 mph.
Monday Night... Mostly clear. Lows in the upper 60s. Southeast winds 5 to 10 mph.
Tuesday... Sunny, warmer with highs in the upper 90s. South winds 5 to 10 mph. Heat index values up to 108 in the afternoon.
Tuesday Night... Partly cloudy. A chance of showers and thunderstorms, mainly in the evening. Humid with lows in the lower 70s. South winds around 5 mph in the evening, becoming light and variable. Chance of rain 50%. Heat index values up to 103 early in the evening.
Wednesday... Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 105.
Wednesday Night... Mostly clear. Hot. Lows in the lower 70s. Highs in the mid 90s. Heat index values up to 105.
Thursday... Mostly clear. Hot. Lows in the lower 70s. Highs in the mid 90s. Heat index values up to 105.
Thursday Night... Partly cloudy. Lows around 70. Highs in the lower 90s. Heat index values up to 100.
Friday... Partly cloudy. Lows around 70. Highs in the lower 90s. Heat index values up to 100.
Saturday... Sunny. Highs in the lower 90s.
Saturday Night... Partly cloudy. A slight chance of showers in the evening. Lows in the upper 60s. Chance of rain 20%.
POP = Probability of Precipitation
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