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City of Waterloo, IllinoisWaterloo, IL 7-Day Weather Forecast
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Waterloo Weather Forecast
Waterloo, IL Weather Forecast Date: 127 PM CDT Thu Sep 03 2026
Weather forecast for Waterloo, IL
Today Hi: 95°FHi: 35°C Lo: 75°F Lo: 24°C |
This Afternoon... Mostly sunny. Hot. Near steady temperature in the mid 90s. Southwest winds around 5 mph. Heat index values up to 107. |
| Fri Hi: 99°FHi: 37°C Lo: 75°F Lo: 24°C |
Friday... Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 107. |
| Sat Hi: 99°FHi: 37°C Lo: 71°F Lo: 22°C |
Saturday... Sunny, hot with highs in the upper 90s. West winds around 5 mph. Heat index values up to 110. |
| Sun Hi: 95°FHi: 35°C Lo: 69°F Lo: 21°C |
Sunday... Mostly clear. Hot. Lows in the lower 70s. Highs in the mid 90s. Heat index values up to 105. |
| Mon Hi: 95°FHi: 35°C Lo: 69°F Lo: 21°C |
Monday... Mostly clear. Hot. Lows in the upper 60s. Highs in the mid 90s. Heat index values up to 105. |
| Tue Hi: 95°FHi: 35°C Lo: 69°F Lo: 21°C |
Tuesday... Mostly clear. Hot. Lows in the upper 60s. Highs in the mid 90s. Heat index values up to 105. |
| Tue Hi: 95°FHi: 35°C Lo: 75°F Lo: 24°C |
Tuesday... Mostly clear. Hot. Lows in the upper 60s. Highs in the mid 90s. Heat index values up to 105. |
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