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City of DeKalb, IllinoisDeKalb, IL 7-Day Weather Forecast
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DeKalb Weather Forecast
DeKalb, IL Weather Forecast Date: 611 PM CST Wed Nov 11 2026
Weather forecast for DeKalb, IL
Tonight Lo: 39°F Lo: 4°C |
Tonight... Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of rain late in the evening. Lows in the upper 30s. Northwest winds 5 to 10 mph, increasing to north 10 to 15 mph with gusts up to 25 mph after midnight. Chance of precipitation 20%. |
Thu Hi: 41°FHi: 5°C Lo: 30°F Lo: -1°C |
Thursday... Partly cloudy. A slight chance of rain late. Breezy with highs in the lower 40s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation 20%. |
Fri Hi: 41°FHi: 5°C Lo: 25°F Lo: -4°C |
Friday... Partly cloudy. Highs in the lower 40s. North winds 10 to 15 mph. Gusts up to 25 mph in the morning. |
Sat Hi: 45°FHi: 7°C Lo: 25°F Lo: -4°C |
Saturday... Mostly sunny. Highs in the mid 40s. |
| Sun Hi: 49°FHi: 9°C Lo: 29°F Lo: -2°C |
Sunday... Mostly sunny. Highs in the upper 40s. |
| Mon Hi: 49°FHi: 9°C Lo: 29°F Lo: -2°C |
Monday... Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 40s. |
| Tue Hi: 50°FHi: 10°C Lo: 29°F Lo: -2°C |
Tuesday... Mostly sunny. Highs around 50. |
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