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

Heavy Rainfall in Southern California and in the Southern Plains; Heavy Snow in the Sierra Nevada Mountains and Rockies

A Pacific storm will bring coastal/lower elevation heavy to excessive rainfall to southern California and the Southern Rockies today, with localized flash flooding possible, especially near recent burn scars. Heavy snow is forecast over parts of the Sierra Nevada Mountains today and over the Northern Rockies on Wednesday. Several inches of snowfall accumulation is possible. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy

70°F

21°C

Humidity 57%
Wind Speed NE 10 mph
Barometer 30.31 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 14 Oct 3:45 pm CDT
Extended Forecast for

Janesville WI

  • Tonight

    Tonight: Showers, mainly after 2am. Low around 51. Northeast wind around 10 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Chance
    Showers then
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly before noon. Mostly cloudy, with a high near 61. East wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 49. East wind around 5 mph becoming calm in the evening.

    Low: 49 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 68. Southeast wind 5 to 10 mph.

    High: 68 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 55. Southeast wind 5 to 10 mph.

    Low: 55 °F

    Slight Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 73. South wind 10 to 15 mph.

    High: 73 °F

    Partly Sunny

  • Friday Night

    Friday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 57. South wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 57 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: A 50 percent chance of showers. Partly sunny, with a high near 69. West wind 5 to 10 mph.

    High: 69 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance
    Showers

Detailed Forecast

Tonight
Showers, mainly after 2am. Low around 51. Northeast wind around 10 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers likely, mainly before noon. Mostly cloudy, with a high near 61. East wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 49. East wind around 5 mph becoming calm in the evening.
Thursday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 68. Southeast wind 5 to 10 mph.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 55. Southeast wind 5 to 10 mph.
Friday
Partly sunny, with a high near 73. South wind 10 to 15 mph.
Friday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 57. South wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 50 percent chance of showers. Partly sunny, with a high near 69. West wind 5 to 10 mph.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 45.
Sunday
A 30 percent chance of showers, mainly before 1pm. Mostly sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 40.
Monday
Sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 45.
Tuesday
A 20 percent chance of showers. Sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Janesville WI
 42.69°N 89.01°W (Elev. 863 ft)
Last Update:
3:34 pm CDT Oct 14, 2025
Forecast Valid:
4pm CDT Oct 14, 2025-6pm CDT Oct 21, 2025
 
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