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Glenn, IL 7-Day Weather Forecast
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Glenn Weather Forecast
Glenn, IL Weather Forecast Date: 932 PM CDT Fri Sep 04 2026
Weather forecast for Glenn, IL
Tonight Lo: 75°F Lo: 24°C |
Tonight... Mostly clear. Lows in the mid 70s. Southwest winds around 5 mph this evening, becoming light and variable. |
Sat Hi: 100°FHi: 38°C Lo: 71°F Lo: 22°C |
Saturday... Sunny, hot with highs around 100. Northwest winds around 5 mph. Highest heat index readings heat index readings up to 107 in the afternoon. |
| Sun Hi: 95°FHi: 35°C Lo: 65°F Lo: 18°C |
Sunday... Sunny. Highs in the mid 90s. Northeast winds 5 to 10 mph. |
| Tue Hi: 95°FHi: 35°C Lo: 65°F Lo: 18°C |
Tuesday... Mostly clear. Highs in the mid 90s. Lows in the mid 60s. |
| Tue Hi: 95°FHi: 35°C Lo: 75°F Lo: 24°C |
Tuesday... Mostly clear. Highs in the mid 90s. Lows in the mid 60s. |
| 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. |
| Thu Hi: 95°FHi: 35°C Lo: 69°F Lo: 21°C |
Thursday... Mostly sunny. Highs in the mid 90s. |
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