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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 93%
Wind Speed NE 5 mph
Barometer 30.00 in
Dewpoint 37°F (3°C)
Visibility 1.50 mi
Wind Chill35°F (2°C)
Last update 5 Mar 7:45 am CST
Extended Forecast for

5 Miles SSW Janesville WI

Dense Fog Advisory March 5, 08:44am until March 5, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory March 5, 08:44am 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. Southeast wind around 5 mph.

    Low: 40 °F

    Patchy Fog

  • Friday

    Friday: Showers and possibly a thunderstorm. Patchy fog before noon. High near 67. 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: 67 °F

    Showers and
    Patchy Fog
    then Showers
    Likely

  • 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

  • Saturday

    Saturday: A 20 percent chance of showers before noon. Partly sunny, with a high near 57. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 57 °F

    Slight Chance
    Showers 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 59. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 59 °F

    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. Northeast wind around 5 mph. Chance of precipitation is 20%.
Tonight
Patchy fog. Otherwise, cloudy, with a low around 40. Southeast wind around 5 mph.
Friday
Showers and possibly a thunderstorm. Patchy fog before noon. High near 67. 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. Southwest wind 10 to 15 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 59. 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 68.
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 64. Chance of precipitation is 70%.
Tuesday Night
Rain. Low around 35. Chance of precipitation is 80%.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 48. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Janesville WI
 42.63°N 89.04°W (Elev. 804 ft)
Last Update:
7:36 am CST Mar 5, 2026
Forecast Valid:
8am CST Mar 5, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation