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Thornton, WI Weather Forecast
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Thornton Weather Forecast
| THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  | | |  |  |  |  | | | |  |
| Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Clearing | Clear | Clear | Patchy Fog | Partly Cloudy | Mostly Cloudy | Patchy Fog | Partly Cloudy |
| Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Hi: 65°FHi: 18°C Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C Lo: 41°FLo: 5°C | Lo: 41°FLo: 5°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 70°FHi: 21°C | Lo: 45°FLo: 7°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 158 PM CDT Sun Sep 20 2026 
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Issued: 113 PM CDT Sun Sep 20 2026
Key Messages
- Hazardous boating and swimming conditions are expected on the Bay and Lake at times through Tuesday.
- A quieter and drier weather pattern will settle into the region for the next week. Patchy frost will be possible at times across the northwoods.
Discussion
... Issued at 113 PM CDT Sun Sep 20 2026
Minimally impactful weather is expected through next weekend. Mostly cloudy skies will remain across the region tonight as breezy northeast wind stream over the relativity warm waters of Lakes ...