Beloit, WI Weather Forecast
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Beloit Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
| Sunny | Clear | Sunny | Clear | Sunny | Partly Cloudy | Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy |
| Hi: 55°FHi: 13°C | Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C | Lo: 39°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C | Lo: 50°FLo: 10°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 731 AM CDT Sat Oct 17 2026 

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Issued: 653 AM CDT Sat Oct 17 2026
Key Messages
- Temperatures to drop into the upper 20s to around 30 inland tonight into early Saturday morning. A Freeze Warning is in effect for most areas, with a Frost Advisory in far southeast Wisconsin near Lake Michigan.
- Southwest gales are forecast late tonight into Sunday night over far northern portions of Lake Michigan. Winds and waves may reach Small Craft Advisory levels for the nearshore waters Sunday into Sunday night.
Aviation
... Issued 645 AM CDT Sat Oct 17 2026
VFR conditions expecte...
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