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Cox Lake, IL Weather Forecast
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Cox Lake Weather Forecast
| TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY |
 |  |  | | | | | | | | |
| Clearing | Sunny | Clear | Sunny | Clear | Mostly Clear | Mostly Clear | Mostly Clear | Clear | Mostly Clear | Mostly Clear |
| Lo: 39°FLo: 4°C | Hi: 60°FHi: 16°C | Lo: 31°FLo: -1°C | Hi: 65°FHi: 18°C | Lo: 35°FLo: 2°C | Hi: 71°FHi: 22°C Lo: 41°FLo: 5°C | Hi: 71°FHi: 22°C Lo: 41°FLo: 5°C | Hi: 71°FHi: 22°C Lo: 41°FLo: 5°C | Lo: 45°FLo: 7°C | Hi: 79°FHi: 26°C Lo: 49°FLo: 9°C | Hi: 79°FHi: 26°C Lo: 49°FLo: 9°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1127 PM CDT Fri Oct 16 2026 
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Issued: 1222 AM CDT Sat Oct 17 2026
Key Messages
- Widespread frost is expected tonight amid a clear and cold night. Some locations may approach 32 degrees.
- A stable and dry pattern then locks in for at least several days on Sunday with mostly seasonable conditions expected with mild days and cool nights.
Discussion
... Issued at 1222 AM CDT Sat Oct 17 2026
As expected conditions are sharply cooler tonight across the quad-state. Moderate northwest winds should continue overnight with temperatures falling into the 40s area-wide. A 1040mb...