Weather World
City of DeKalb, IllinoisDeKalb, IL 7-Day Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
DeKalb Weather Forecast
DeKalb, IL Weather Forecast Date: 116 AM CST Thu Nov 12 2026
Weather forecast for DeKalb, IL
Tonight Lo: 39°F Lo: 4°C |
Tonight... Mostly cloudy. A slight chance of showers. Nearly steady temperatures in the upper 30s. North winds 10 to 15 mph. Chance of precipitation 20%. |
Thu Hi: 41°FHi: 5°C Lo: 29°F Lo: -2°C |
Thursday... Mostly cloudy. A slight chance of rain showers early in the morning. 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... Mostly cloudy in the morning, then becoming partly cloudy. A slight chance of snow showers in the morning. Breezy with highs in the lower 40s. North winds 10 to 15 mph. Gusts up to 30 mph in the morning. Chance of precipitation 20%. |
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... Sunny. Highs in the upper 40s. |
| Mon Hi: 49°FHi: 9°C Lo: 29°F Lo: -2°C |
Monday... Sunny. Highs in the upper 40s. |
| Tue Hi: 51°FHi: 11°C Lo: 29°F Lo: -2°C |
Tuesday... Sunny. Highs in the lower 50s. |
DeKalb Radar Loop
Use the map search tool if you want to place a location marker on the radar map...