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Thayer, IL 7-Day Night Weather Forecast
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Thayer, IL Weather Forecast
Thayer, IL Weather Forecast Date: 637 PM CDT Fri Sep 04 2026
The area/counties/county of: Sangamon, including the city of Springfield.or toggle through each period.
Tonight... Mostly clear. Lows in the mid 70s. Southwest winds around 5 mph.
Saturday... Sunny, hot with highs in the upper 90s. Northwest winds 5 to 10 mph. Heat index values up to 107.
Saturday Night... Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the upper 60s. Northeast winds 5 to 10 mph.
Sunday... Mostly sunny. Highs around 90. East winds 5 to 10 mph.
Sunday Night... Mostly clear. Lows in the lower 60s. East winds 5 to 10 mph.
Labor Day... Mostly clear. Highs around 90. Lows in the mid 60s.
Monday Night... Mostly clear. Highs around 90. Lows in the mid 60s.
Tuesday... Mostly clear. Hot. Highs in the upper 90s. Lows in the mid 70s.
Wednesday... Mostly clear. Hot. Highs in the upper 90s. Lows in the mid 70s.
Wednesday Night... Mostly clear in the evening, then becoming partly cloudy. A chance of showers after midnight. Lows in the lower 70s. Chance of rain 30%.
Thursday... Partly cloudy. Highs around 90. Lows in the mid 60s.
POP = Probability of Precipitation
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