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

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Rain Thunderstorm in Vicinity

45°F

7°C

Humidity 93%
Wind Speed N 12 mph
Barometer 29.85 in
Dewpoint 43°F (6°C)
Visibility 2.00 mi
Wind Chill39°F (4°C)
Last update 31 Mar 2:45 pm CDT
Extended Forecast for

5 Miles SSW Janesville WI

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm before 4pm, then scattered showers and thunderstorms, mainly between 4pm and 5pm. Mostly cloudy, with a steady temperature around 52. North wind around 15 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 52 °F

    Showers
    Likely

  • Tonight

    Tonight: Mostly cloudy, with a low around 35. North wind around 10 mph.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Isolated showers after 5pm. Mostly cloudy, with a high near 45. Breezy, with an east wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 10%.

    High: 45 °F

    Mostly Cloudy
    then Isolated
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Isolated showers before 7pm, then rain between 7pm and 10pm, then rain and possibly a thunderstorm after 10pm. Low around 37. Breezy, with an east wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 37 °F

    Showers and
    Breezy

  • Thursday

    Thursday: Rain and possibly a thunderstorm. High near 70. Breezy, with an east wind 15 to 20 mph becoming south in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 70 °F

    Rain and
    Breezy

  • Thursday Night

    Thursday Night: A chance of rain and thunderstorms before 10pm, then a chance of rain between 10pm and 1am. Mostly cloudy, with a low around 41. Breezy, with a west wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 50%.

    Low: 41 °F

    Chance Rain
    and Breezy

  • Friday

    Friday: A 20 percent chance of rain and thunderstorms after 1pm. Partly sunny, with a high near 63. West wind 5 to 10 mph becoming southeast in the afternoon.

    High: 63 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm. Low around 44. East wind around 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 44 °F

    Rain

  • Saturday

    Saturday: A 40 percent chance of rain. Cloudy, with a high near 56. Breezy.

    High: 56 °F

    Chance Rain
    and Breezy

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm before 4pm, then scattered showers and thunderstorms, mainly between 4pm and 5pm. Mostly cloudy, with a steady temperature around 52. North wind around 15 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Mostly cloudy, with a low around 35. North wind around 10 mph.
Wednesday
Isolated showers after 5pm. Mostly cloudy, with a high near 45. Breezy, with an east wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 10%.
Wednesday Night
Isolated showers before 7pm, then rain between 7pm and 10pm, then rain and possibly a thunderstorm after 10pm. Low around 37. Breezy, with an east wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
Rain and possibly a thunderstorm. High near 70. Breezy, with an east wind 15 to 20 mph becoming south in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
A chance of rain and thunderstorms before 10pm, then a chance of rain between 10pm and 1am. Mostly cloudy, with a low around 41. Breezy, with a west wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 50%.
Friday
A 20 percent chance of rain and thunderstorms after 1pm. Partly sunny, with a high near 63. West wind 5 to 10 mph becoming southeast in the afternoon.
Friday Night
Rain and possibly a thunderstorm. Low around 44. East wind around 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
A 40 percent chance of rain. Cloudy, with a high near 56. Breezy.
Saturday Night
A 20 percent chance of rain before 1am. Mostly cloudy, with a low around 31. Breezy.
Sunday
Partly sunny, with a high near 48. Breezy.
Sunday Night
Mostly clear, with a low around 29.
Monday
Mostly sunny, with a high near 54.
Monday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 36.
Tuesday
Mostly cloudy, with a high near 54.
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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:
2:36 pm CDT Mar 31, 2026
Forecast Valid:
3pm CDT Mar 31, 2026-6pm CDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation