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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fog/Mist

39°F

4°C

Humidity 100%
Wind Speed N 3 mph
Barometer 30.00 in
Dewpoint 39°F (4°C)
Visibility 1.00 mi
Last update 5 Mar 5:45 am CST
Extended Forecast for

2 Miles W Beloit WI

Dense Fog Advisory March 5, 06:14am until March 5, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory March 5, 06:14am until March 5, 12:00pm

    NOW until 12:00pm Thu

    Dense Fog Advisory

  • Today

    High: 49 °F

    Isolated
    Showers and
    Dense Fog
    then Patchy
    Fog

  • Tonight

    Tonight: Patchy fog. Otherwise, cloudy, with a low around 40. East wind around 5 mph becoming southeast after midnight.

    Low: 40 °F

    Patchy Fog

  • Friday

    Friday: Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Patchy fog before noon. High near 68. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 68 °F

    Showers and
    Patchy Fog
    then Chance
    T-storms

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 48. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Showers
    Likely then
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before noon. Partly sunny, with a high near 57. Breezy, with a southwest wind 10 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 57 °F

    Slight Chance
    Showers and
    Breezy then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 33. Northwest wind 5 to 10 mph becoming southwest after midnight.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 60 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44. Southwest wind 10 to 15 mph.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Today
Isolated showers before 11am. Widespread dense fog, mainly before 10am. Otherwise, cloudy, with a high near 49. Calm wind becoming northeast around 5 mph in the morning. Chance of precipitation is 20%.
Tonight
Patchy fog. Otherwise, cloudy, with a low around 40. East wind around 5 mph becoming southeast after midnight.
Friday
Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Patchy fog before noon. High near 68. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers and possibly a thunderstorm. Low around 48. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A 20 percent chance of showers before noon. Partly sunny, with a high near 57. Breezy, with a southwest wind 10 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Mostly clear, with a low around 33. Northwest wind 5 to 10 mph becoming southwest after midnight.
Sunday
Sunny, with a high near 60. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 44. Southwest wind 10 to 15 mph.
Monday
Sunny, with a high near 69.
Monday Night
A 20 percent chance of rain after midnight. Mostly clear, with a low around 44.
Tuesday
Rain likely. Mostly sunny, with a high near 66. Chance of precipitation is 70%.
Tuesday Night
Rain. Low around 36. Chance of precipitation is 80%.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 50. Chance of precipitation is 50%.
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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:
5:57 am CST Mar 5, 2026
Forecast Valid:
6am CST Mar 5, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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