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.

Partly Cloudy

39°F

4°C

Humidity 42%
Wind Speed NW 20 G 32 mph
Barometer 29.91 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 13 Mar 6:45 pm CDT
Extended Forecast for

5 Miles WSW Fort Atkinson WI

Winter Storm Watch March 15, 04:00pm until March 16, 07:00pm
Click here for hazard details and duration
Winter Storm Watch

  • Tonight

    Tonight: Partly cloudy, with a low around 26. Northwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.

    Low: 26 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow, mainly before 3pm. Cloudy, with a high near 39. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.

    High: 39 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday Night

    Saturday Night: A chance of snow between 7pm and 1am, then rain likely. Cloudy, with a low around 31. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Chance Snow
    then
    Rain/Snow
    Likely

  • Sunday

    Sunday: Rain and possibly a thunderstorm. High near 54. East wind around 15 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 54 °F

    Rain

  • Sunday Night

    Sunday Night: Snow, possibly mixed with rain, becoming all snow after 10pm. The snow could be heavy at times. Patchy blowing snow after 10pm. Low around 18. Windy, with a north wind 20 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 18 °F

    Rain/Snow and
    Patchy
    Blowing Snow

  • Monday

    Monday: Snow likely, mainly before 1pm. Areas of blowing snow. Cloudy, with a high near 22. Windy, with a northwest wind around 25 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    High: 22 °F

    Snow Likely
    and Areas
    Blowing Snow

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 4. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 4 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 23. Northwest wind around 10 mph.

    High: 23 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 14.

    Low: 14 °F

    Chance Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 26. Northwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Saturday
A 30 percent chance of snow, mainly before 3pm. Cloudy, with a high near 39. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.
Saturday Night
A chance of snow between 7pm and 1am, then rain likely. Cloudy, with a low around 31. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday
Rain and possibly a thunderstorm. High near 54. East wind around 15 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
Snow, possibly mixed with rain, becoming all snow after 10pm. The snow could be heavy at times. Patchy blowing snow after 10pm. Low around 18. Windy, with a north wind 20 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Monday
Snow likely, mainly before 1pm. Areas of blowing snow. Cloudy, with a high near 22. Windy, with a northwest wind around 25 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 4. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday
Mostly sunny, with a high near 23. Northwest wind around 10 mph.
Tuesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 14.
Wednesday
A 20 percent chance of snow before 1pm. Partly sunny, with a high near 41.
Wednesday Night
Partly cloudy, with a low around 29.
Thursday
Mostly sunny, with a high near 48.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Partly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Fort Atkinson WI
 42.88°N 88.93°W (Elev. 774 ft)
Last Update:
6:51 pm CDT Mar 13, 2026
Forecast Valid:
7pm CDT Mar 13, 2026-6pm CDT Mar 20, 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