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Altamont Reservoir, IL 7-Day Weather Forecast
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Altamont Reservoir Weather Forecast
Altamont Reservoir, IL Weather Forecast Date: 1237 AM CDT Thu Aug 27 2026
Weather forecast for Altamont Reservoir, IL
Tonight Lo: 65°F Lo: 18°C |
Tonight... Mostly clear. Near steady temperature in the mid 60s. Northwest winds around 5 mph. |
Thu Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Thursday... Sunny. Highs in the mid 80s. North winds around 5 mph. |
| Fri Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Friday... Sunny. Highs in the mid 80s. Northeast winds around 5 mph. |
| Sat Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Saturday... Mostly clear. Highs in the mid 80s. Lows in the lower 60s. |
| Sun Hi: 91°FHi: 33°C Lo: 71°F Lo: 22°C |
Sunday... Mostly clear. Highs in the lower 90s. Lows in the lower 70s. |
| Mon Hi: 91°FHi: 33°C Lo: 71°F Lo: 22°C |
Monday... Mostly clear. Highs in the lower 90s. Lows in the lower 70s. |
| Tue Hi: 91°FHi: 33°C Lo: 71°F Lo: 22°C |
Tuesday... Mostly clear. Highs in the lower 90s. Lows in the lower 70s. |
| Wed Hi: 91°FHi: 33°C Lo: 71°F Lo: 22°C |
Wednesday... Mostly clear. Highs in the lower 90s. Lows in the lower 70s. |
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