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City of Ottawa, ILOttawa, IL 7-Day Weather Forecast
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Ottawa Weather Forecast
Ottawa, IL Weather Forecast Date: 146 PM CST Tue Nov 10 2026
Weather forecast for Ottawa, IL
Today Hi: 65°FHi: 18°C Lo: 41°F Lo: 5°C |
This Afternoon... Sunny. Highs in the mid 60s. Northwest winds around 5 mph. |
Veterans Day Hi: 55°FHi: 13°C Lo: 35°F Lo: 2°C |
Veterans Day... Mostly cloudy. Isolated showers early in the morning, then scattered showers in the late morning and early afternoon. Isolated showers late. Highs in the mid 50s. Southeast winds around 5 mph, increasing to north 10 to 15 mph in the afternoon. Chance of precipitation 40%. |
Thu Hi: 45°FHi: 7°C Lo: 29°F Lo: -2°C |
Thursday... Mostly cloudy. A slight chance of rain showers in the morning. Highs in the mid 40s. North winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation 20%. |
Fri Hi: 41°FHi: 5°C Lo: 25°F Lo: -4°C |
Friday... Mostly sunny in the morning, then becoming partly cloudy. Highs in the lower 40s. |
| Sat Hi: 45°FHi: 7°C Lo: 29°F Lo: -2°C |
Saturday... Sunny. Highs in the mid 40s. |
| Sun Hi: 49°FHi: 9°C Lo: 31°F Lo: -1°C |
Sunday... Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 40s. |
| Mon Hi: 51°FHi: 11°C |
Monday... Partly cloudy. Highs in the lower 50s. |
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