National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

32°F

0°C

Humidity 87%
Wind Speed Calm
Barometer 29.94 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 15 Feb 9:15 pm CST
Extended Forecast for

2 Miles W Beloit WI

  • Tonight

    Tonight: Increasing clouds, with a low around 35. Light south wind increasing to 5 to 10 mph after midnight.

    Low: 35 °F

    Increasing
    Clouds

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 61. West wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 61 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 37. West wind around 5 mph becoming east in the evening.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 55. Southeast wind 5 to 15 mph.

    High: 55 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Rain likely, mainly after midnight. Mostly cloudy, with a low around 48. Southeast wind around 15 mph becoming south after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 48 °F

    Chance Rain
    then Rain
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of rain before noon. Sunny, with a high near 60. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 60 °F

    Chance Rain
    then Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 33. West wind 10 to 15 mph becoming north after midnight.

    Low: 33 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of rain after noon. Partly sunny, with a high near 53. East wind 10 to 15 mph.

    High: 53 °F

    Partly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 31.

    Low: 31 °F

    Chance Rain

Detailed Forecast

Tonight
Increasing clouds, with a low around 35. Light south wind increasing to 5 to 10 mph after midnight.
Washington's Birthday
Mostly sunny, with a high near 61. West wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 37. West wind around 5 mph becoming east in the evening.
Tuesday
Mostly cloudy, with a high near 55. Southeast wind 5 to 15 mph.
Tuesday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 48. Southeast wind around 15 mph becoming south after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A 30 percent chance of rain before noon. Sunny, with a high near 60. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 33. West wind 10 to 15 mph becoming north after midnight.
Thursday
A 30 percent chance of rain after noon. Partly sunny, with a high near 53. East wind 10 to 15 mph.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 31.
Friday
A chance of rain and snow before noon, then a slight chance of snow. Partly sunny, with a high near 41. Chance of precipitation is 30%.
Friday Night
A 20 percent chance of snow. Partly cloudy, with a low around 23.
Saturday
A 20 percent chance of snow. Partly sunny, with a high near 37.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Beloit WI
 42.52°N 89.05°W (Elev. 751 ft)
Last Update:
9:14 pm CST Feb 15, 2026
Forecast Valid:
9pm CST Feb 15, 2026-6pm CST Feb 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation