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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Freezing Fog

32°F

0°C

Humidity 93%
Wind Speed E 3 mph
Barometer 30.20 in
Dewpoint 30°F (-1°C)
Visibility 0.15 mi
Last update 4 Mar 3:15 am CST
Extended Forecast for

5 Miles SSW Janesville WI

Dense Fog Advisory March 4, 03:26am until March 4, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory March 4, 03:26am until March 4, 09:00am

    NOW until 9:00am Wed

    Dense Fog Advisory

  • Overnight

    Low: 28 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 10am. Otherwise, partly sunny, with a high near 54. Light east wind becoming southeast 5 to 10 mph in the morning.

    High: 54 °F

    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 4am. Patchy fog between 2am and 4am. Otherwise, mostly cloudy, with a low around 39. East wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Slight Chance
    Rain then
    Rain Likely
    and Patchy
    Fog

  • Thursday

    Thursday: Rain likely, mainly before noon. Mostly cloudy, with a high near 51. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 51 °F

    Rain Likely
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain after 3am. Mostly cloudy, with a low around 40. Southeast wind around 5 mph.

    Low: 40 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Friday

    Friday: Rain and possibly a thunderstorm. High near 66. Southeast wind 10 to 15 mph becoming south in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 66 °F

    Rain

  • Friday Night

    Friday Night: Rain before 9pm, then rain and possibly a thunderstorm between 9pm and midnight, then rain after midnight. Low around 42. South wind around 15 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 42 °F

    Rain

  • Saturday

    Saturday: A 20 percent chance of rain before noon. Mostly cloudy, then gradually becoming sunny, with a high near 51. Northwest wind 10 to 15 mph.

    High: 51 °F

    Slight Chance
    Rain then
    Sunny

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 28. Calm wind.
Wednesday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 54. Light east wind becoming southeast 5 to 10 mph in the morning.
Wednesday Night
Rain likely, mainly after 4am. Patchy fog between 2am and 4am. Otherwise, mostly cloudy, with a low around 39. East wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain likely, mainly before noon. Mostly cloudy, with a high near 51. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A 20 percent chance of rain after 3am. Mostly cloudy, with a low around 40. Southeast wind around 5 mph.
Friday
Rain and possibly a thunderstorm. High near 66. Southeast wind 10 to 15 mph becoming south in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Rain before 9pm, then rain and possibly a thunderstorm between 9pm and midnight, then rain after midnight. Low around 42. South wind around 15 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
A 20 percent chance of rain before noon. Mostly cloudy, then gradually becoming sunny, with a high near 51. Northwest wind 10 to 15 mph.
Saturday Night
Mostly clear, with a low around 33.
Sunday
Mostly sunny, with a high near 59. Breezy.
Sunday Night
Mostly clear, with a low around 41.
Monday
Sunny, with a high near 68.
Monday Night
A 20 percent chance of rain and thunderstorms. Mostly clear, with a low around 49.
Tuesday
Rain likely. Partly sunny, with a high near 66. Breezy. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Janesville WI
 42.63°N 89.04°W (Elev. 804 ft)
Last Update:
2:32 am CST Mar 4, 2026
Forecast Valid:
3am CST Mar 4, 2026-6pm CDT Mar 10, 2026
 
Forecast Discussion
 
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Additional Resources

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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