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Potomac, IL 7-Day Weather Forecast
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Potomac Weather Forecast
Potomac, IL Weather Forecast Date: 1237 AM CDT Fri Sep 04 2026
Weather forecast for Potomac, IL
Tonight Lo: 75°F Lo: 24°C |
Tonight... Mostly clear. Near steady temperature in the mid 70s. South winds around 5 mph. |
Fri Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Friday... Sunny, hot with highs in the mid 90s. Southwest winds around 5 mph. Heat index values up to 104. |
| Sat Hi: 91°FHi: 33°C Lo: 65°F Lo: 18°C |
Saturday... Sunny with highs in the lower 90s. North winds around 5 mph. Heat index values up to 102. |
| Sun Hi: 85°FHi: 29°C Lo: 60°F Lo: 16°C |
Sunday... Mostly clear. Highs in the mid 80s. Lows around 60. |
| Mon Hi: 85°FHi: 29°C Lo: 60°F Lo: 16°C |
Monday... Mostly clear. Highs in the mid 80s. Lows around 60. |
| Tue Hi: 85°FHi: 29°C Lo: 60°F Lo: 16°C |
Tuesday... Mostly clear. Highs in the mid 80s. Lows around 60. |
| Wed Hi: 85°FHi: 29°C Lo: 60°F Lo: 16°C |
Wednesday... Mostly clear. Highs in the mid 80s. Lows around 60. |
| Thu Hi: 85°FHi: 29°C Lo: 60°F Lo: 16°C |
Thursday... Mostly clear. Highs in the mid 80s. Lows around 60. |
| Thu Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Thursday... Mostly clear. Highs in the mid 80s. Lows around 60. |
Tue Hi: 90°FHi: 32°C Lo: 71°F Lo: 22°C |
Tuesday... Partly cloudy. Lows in the lower 60s. Highs around 90. |
| Wed Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Wednesday... Partly cloudy. Highs in the mid 90s. Lows in the lower 70s. |
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