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Mathis, IL 7-Day Night Weather Forecast
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Mathis, IL Weather Forecast
Mathis, IL Weather Forecast Date: 127 AM CDT Sat Sep 05 2026
The area/counties/county of: Clinton County Il, including the cities of: Centralia and Salem.or toggle through each period.
Rest of Tonight... Mostly clear. Near steady temperature in the mid 70s. Light and variable winds.
Saturday... Mostly sunny. Isolated showers and thunderstorms in the afternoon. Hot with highs in the upper 90s. West winds around 5 mph. Chance of rain 20%. Heat index values up to 110.
Saturday Night... Partly cloudy with isolated showers and thunderstorms in the evening, then mostly clear after midnight. Humid with lows around 70. North winds around 5 mph. Chance of rain 20%. Heat index values up to 105 early in the evening.
Sunday... Sunny. Highs around 90. Northeast winds 5 to 10 mph.
Sunday Night... Mostly clear. Lows in the lower 60s. Northeast winds 5 to 10 mph.
Labor Day... Mostly clear. Highs in the upper 80s. Lows in the mid 60s.
Monday Night... Mostly clear. Highs in the upper 80s. Lows in the mid 60s.
Tuesday... Mostly clear. Hot. Highs in the mid 90s. Lows in the lower 70s.
Tuesday Night... Mostly clear. Hot. Highs in the mid 90s. Lows in the lower 70s.
Wednesday... Sunny, hot with highs around 100. Heat index values up to 105.
Wednesday Night... Mostly clear with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows around 70. Chance of rain 40%. Heat index values up to 100 early in the evening.
Thursday... Mostly sunny. A chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Not as warm with highs around 90. Chance of rain 50%.
Thursday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 60s.
POP = Probability of Precipitation
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