Wisconsin · NWS MKX office

Beloit, WI weather

It is 55°F and clear at Janesville-Rock County as of Oct 28, 12:35 AM CDT. Overnight: Mostly Clear, low near 48°F, 1% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 12:31 AM CDT.

Updated Oct 28, 1:25 AM CDT (snapshot)

Current conditions

Temperature

55°F

Clear

Wind

Calm

Humidity 72% · dew point 46°F

Pressure · visibility

30.16 inHg

Visibility 10 mi

Observed at Janesville-Rock County (KJVL), Oct 28, 12:35 AM CDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Beloit forecast zone right now.

Around the NWS MKX forecast area

No active alerts in zones served by the MKX office near Beloit.

From the alert snapshot of Oct 28, 2026, 2:15 AM EDT. No alerts are active anywhere in Wisconsin.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Beloit (local time)
TimeTempForecastPrecip. chanceWind
Wed 1 AM56°FMostly Clear1%S 5 mph
Wed 2 AM54°FMostly Clear1%S 5 mph
Wed 3 AM52°FMostly Clear0%S 5 mph
Wed 4 AM50°FMostly Clear1%S 5 mph
Wed 5 AM49°FMostly Clear1%S 5 mph
Wed 6 AM48°FSunny0%S 5 mph
Wed 7 AM49°FPatchy Fog0% 0 mph
Wed 8 AM51°FSunny0%S 5 mph
Wed 9 AM55°FSunny0%S 5 mph
Wed 10 AM61°FSunny0%S 5 mph
Wed 11 AM65°FSunny0%S 5 mph
Wed 12 PM68°FSunny0%S 10 mph
Wed 1 PM71°FSunny0%S 10 mph
Wed 2 PM73°FSunny0%S 10 mph
Wed 3 PM74°FSunny0%S 10 mph
Wed 4 PM74°FSunny0%S 10 mph
Wed 5 PM72°FSunny1%S 10 mph
Wed 6 PM69°FMostly Clear3%S 10 mph
Wed 7 PM66°FMostly Clear5%S 10 mph
Wed 8 PM65°FMostly Clear5%S 10 mph
Wed 9 PM64°FMostly Clear6%S 15 mph
Wed 10 PM64°FMostly Clear6%S 15 mph
Wed 11 PM63°FPartly Cloudy7%S 15 mph
Thu 12 AM63°FMostly Cloudy12%S 15 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Beloit can differ.

7-day forecast

Overnight

Low 48°F

Mostly clear, with a low around 48. South wind around 5 mph.

Wednesday

High 75°F·Low 57°F

Patchy fog between 7am and 8am. Sunny, with a high near 75. South wind 0 to 10 mph.

Wednesday Night: A slight chance of showers and thunderstorms between 1am and 2am, then a chance of showers and thunderstorms between 2am and 5am. Partly cloudy, with a low around 57. South wind 10 to 15 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

Thursday

High 69°F·Low 39°F

Mostly sunny, with a high near 69. West wind 5 to 10 mph. New rainfall amounts less than a tenth of an inch possible.

Thursday Night: Mostly clear, with a low around 39. North wind 0 to 5 mph.

Friday

High 62°F·Low 46°F

A chance of rain showers after 1pm. Partly sunny, with a high near 62. East wind 0 to 5 mph. Chance of precipitation is 30%.

Friday Night: A chance of rain showers. Cloudy, with a low around 46. East wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

Saturday

High 63°F·Low 49°F

A chance of rain showers. Mostly cloudy, with a high near 63. East wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

Saturday Night: A chance of rain showers. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.

Sunday

High 65°F·Low 50°F

A chance of rain showers. Mostly cloudy, with a high near 65. Chance of precipitation is 30%.

Sunday Night: A slight chance of rain showers after midnight. Mostly cloudy, with a low around 50. Chance of precipitation is 20%.

Monday

High 66°F·Low 48°F

A chance of rain showers. Mostly cloudy, with a high near 66. Chance of precipitation is 50%.

Monday Night: A chance of rain showers. Mostly cloudy, with a low around 48. Chance of precipitation is 50%.

Tuesday

High 63°F

Rain showers likely. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.

Nearby cities

Larger cities in the area

Other cities in Rock County

See every city we cover in Wisconsin, or check all active alerts.

About this forecast

Forecast office
Beloit is served by the National Weather Service MKX forecast office, forecast zone WIZ069, county zone WIC105.
Location used
The Census Bureau's internal point for Beloit (42.5235, -89.0177), in Rock County. Population: 36,633 (2024 estimate), number 23 of the 42 Wisconsin cities on this site.
Radar
Nearest NWS radar: KMKX. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/42.5235,-89.0177 (forecast issued Oct 28, 12:31 AM CDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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