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City of DeKalb, IllinoisDeKalb, IL Weather Forecast
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| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | VETERANS DAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  |  | | |  |  |  |  |  | | |
| Patchy Fog | Clearing | Mostly Clear | Partly Cloudy | Mostly Clear | Mostly Sunny | Partly Cloudy | Chance of Rain | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Cloudy |
| Lo: 35°FLo: 2°C | Hi: 59°FHi: 15°C | Lo: 35°FLo: 2°C | Hi: 59°FHi: 15°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 39°FLo: 4°C | Hi: 59°FHi: 15°C | Lo: 39°FLo: 4°C | Hi: 49°FHi: 9°C | Lo: 29°FLo: -2°C | Hi: 45°FHi: 7°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 605 PM CST Sat Nov 07 2026 
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Issued: 510 PM CST Sat Nov 7 2026
Key Messages
- Dry conditions and a warming trend will occur through the weekend into early next week.
- The next chance for precipitation is forecast mid-late next week and will likely be accompanied by cooler temperatures.
Discussion
... Issued at 129 PM CST Sat Nov 7 2026
The low pressure system that has been resulting in the cooler, more seasonable temperatures is moving eastwards into the northeastern CONUS. Across the southwestern CONUS, a large upper-level low embedded within the subtropical jet ...