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Thayer, IL 7-Day Weather Forecast
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Thayer Weather Forecast
Thayer, IL Weather Forecast Date: 1237 AM CDT Sat Sep 05 2026
Weather forecast for Thayer, IL
Tonight Lo: 75°F Lo: 24°C |
Tonight... Mostly clear. Lows in the mid 70s. Southwest winds around 5 mph. |
Sat Hi: 99°FHi: 37°C Lo: 69°F Lo: 21°C |
Saturday... Sunny, hot with highs in the upper 90s. Northwest winds 5 to 10 mph. Heat index values up to 107. |
| Sun Hi: 90°FHi: 32°C Lo: 65°F Lo: 18°C |
Sunday... Mostly sunny. Highs around 90. East winds 5 to 10 mph. |
| Labor Day Hi: 90°FHi: 32°C Lo: 65°F Lo: 18°C |
Labor Day... Mostly clear. Highs around 90. Lows in the mid 60s. |
| Tue Hi: 99°FHi: 37°C Lo: 75°F Lo: 24°C |
Tuesday... Mostly clear. Hot. Highs in the upper 90s. Lows in the mid 70s. |
| Wed Hi: 99°FHi: 37°C Lo: 75°F Lo: 24°C |
Wednesday... Mostly clear. Hot. Highs in the upper 90s. Lows in the mid 70s. |
| Wed Hi: 99°FHi: 37°C Lo: 71°F Lo: 22°C |
Wednesday... Mostly clear. Hot. Highs in the upper 90s. Lows in the mid 70s. |
Thu Hi: 90°FHi: 32°C Lo: 65°F Lo: 18°C |
Thursday... Partly cloudy. Highs around 90. Lows in the mid 60s. |
| Fri Hi: 90°FHi: 32°C Lo: 65°F Lo: 18°C |
Friday... Partly cloudy. Highs around 90. Lows in the mid 60s. |
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