Centralia Junior High School, IL 7-Day Night Weather Forecast
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Centralia Junior High School, IL Weather Forecast


Centralia Junior High School, IL Weather Forecast Date: 258 AM CDT Sat Aug 15 2026
The area/counties/county of: Clinton County Il, including the cities of: Centralia and Salem.or toggle through each period.
Today... Mostly sunny. A slight chance of showers and thunderstorms this morning. Highs in the lower 90s. Southwest winds around 5 mph. Chance of rain 20%. Heat index values up to 112 this afternoon.
Tonight... Mostly clear. Humid with lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 111 early in the evening.
Sunday... Mostly sunny. Humid with highs in the lower 90s. West winds around 5 mph. Heat index values up to 113 in the afternoon.
Sunday Night... Partly cloudy. A chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Humid with lows in the lower 70s. North winds around 5 mph. Chance of rain 50%. Heat index values up to 108 early in the evening.
Monday... Mostly sunny. Humid with highs in the mid 80s. North winds around 5 mph.
Monday Night... Partly cloudy. Lows in the mid 60s.
Tuesday... Sunny. Highs in the upper 80s.
Tuesday Night... Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the lower 70s. Chance of rain 20%.
Wednesday... Partly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 20%. Heat index values up to 100.
Wednesday Night... Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 60s. Chance of rain 30%.
Thursday... Mostly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the lower 80s. Chance of rain 20%.
Thursday Night... Partly cloudy in the evening, then mostly clear with a chance of showers after midnight. Lows in the lower 60s. Chance of rain 30%.
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