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.

Light Snow

37°F

3°C

Humidity 60%
Wind Speed SE 14 mph
Barometer 30.08 in
Dewpoint 25°F (-4°C)
Visibility 6.00 mi
Wind Chill28°F (-2°C)
Last update 14 Mar 4:45 pm CDT
Extended Forecast for

Darien 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: A chance of rain and snow before 11pm, then a chance of snow between 11pm and midnight, then a chance of rain after midnight. Cloudy, with a low around 33. Breezy, with an east wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 40%.

    Low: 33 °F

    Chance
    Rain/Snow
    then Chance
    Rain and
    Breezy

  • Sunday

    Sunday: Rain likely, then rain and possibly a thunderstorm after 10am. High near 54. Breezy, with a southeast wind 15 to 20 mph becoming south in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 54 °F

    Rain and
    Breezy

  • Sunday Night

    Sunday Night: Rain, snow, and sleet before 10pm, then snow, possibly mixed with sleet between 10pm and 11pm, then snow after 11pm. Patchy blowing snow after 10pm. Low around 17. Windy, with a north wind 20 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 3 inches possible.

    Low: 17 °F

    Wintry Mix
    and Patchy
    Blowing Snow

  • Monday

    Monday: Snow, mainly before 1pm. Widespread blowing snow, mainly between 10am and noon. High near 21. Wind chill values between zero and 5. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 21 °F

    Snow and
    Blowing Snow

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 4. Blustery, with a northwest wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.

    Low: 4 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 22. West wind around 10 mph.

    High: 22 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow, mainly after 1am. Low around 16. South wind 5 to 10 mph. Chance of precipitation is 80%.

    Low: 16 °F

    Chance Snow
    then Snow

  • Wednesday

    Wednesday: A 20 percent chance of snow before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 40. South wind around 10 mph becoming west in the afternoon.

    High: 40 °F

    Slight Chance
    Snow

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of rain and snow before 11pm, then a chance of snow between 11pm and midnight, then a chance of rain after midnight. Cloudy, with a low around 33. Breezy, with an east wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 40%.
Sunday
Rain likely, then rain and possibly a thunderstorm after 10am. High near 54. Breezy, with a southeast wind 15 to 20 mph becoming south in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
Rain, snow, and sleet before 10pm, then snow, possibly mixed with sleet between 10pm and 11pm, then snow after 11pm. Patchy blowing snow after 10pm. Low around 17. Windy, with a north wind 20 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 3 inches possible.
Monday
Snow, mainly before 1pm. Widespread blowing snow, mainly between 10am and noon. High near 21. Wind chill values between zero and 5. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. 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 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.
Tuesday
Mostly sunny, with a high near 22. West wind around 10 mph.
Tuesday Night
Snow, mainly after 1am. Low around 16. South wind 5 to 10 mph. Chance of precipitation is 80%.
Wednesday
A 20 percent chance of snow before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 40. South wind around 10 mph becoming west in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Mostly sunny, with a high near 50.
Thursday Night
Mostly cloudy, with a low around 32.
Friday
Partly sunny, with a high near 55.
Friday Night
Mostly cloudy, with a low around 34.
Saturday
Partly sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Darien WI
 42.59°N 88.72°W (Elev. 945 ft)
Last Update:
4:34 pm CDT Mar 14, 2026
Forecast Valid:
5pm CDT Mar 14, 2026-6pm CDT Mar 21, 2026
 
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