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.

Mostly Cloudy

27°F

-3°C

Humidity 74%
Wind Speed Calm
Barometer 30.13 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 14 Mar 3:15 am CDT
Extended Forecast for

4 Miles WNW Beloit WI

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

  • Overnight

    Overnight: Mostly cloudy, with a low around 27. North wind around 5 mph.

    Low: 27 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of snow between 11am and 2pm. Cloudy, with a high near 40. Light and variable wind becoming southeast 5 to 10 mph in the morning. Chance of precipitation is 20%.

    High: 40 °F

    Slight Chance
    Snow

  • Saturday Night

    Saturday Night: A 40 percent chance of rain, mainly between midnight and 4am. Cloudy, with a low around 32. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 32 °F

    Cloudy then
    Chance Rain
    and Breezy

  • Sunday

    Sunday: A chance of rain, then rain and possibly a thunderstorm after 10am. High near 58. Breezy, with a southeast wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 58 °F

    Breezy. Rain
    Likely then
    Rain

  • Sunday Night

    Sunday Night: Rain, possibly mixed with snow, becoming all snow after 10pm. The snow could be heavy at times. Widespread blowing snow, mainly after 4am. Low around 18. Windy, with a north wind 20 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 18 °F

    Rain/Snow and
    Blowing Snow

  • Monday

    Monday: Snow likely, mainly before 1pm. Widespread blowing snow, mainly before 11am. Cloudy, with a high near 21. Windy, with a northwest wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    High: 21 °F

    Snow Likely
    and Blowing
    Snow

  • Monday Night

    Monday Night: Cloudy during the early evening, then gradual clearing, with a low around 4. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph.

    Low: 4 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

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

    High: 22 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow likely, mainly after 1am. Mostly cloudy, with a low around 15. Chance of precipitation is 60%.

    Low: 15 °F

    Snow Likely

Detailed Forecast

Overnight
Mostly cloudy, with a low around 27. North wind around 5 mph.
Saturday
A slight chance of snow between 11am and 2pm. Cloudy, with a high near 40. Light and variable wind becoming southeast 5 to 10 mph in the morning. Chance of precipitation is 20%.
Saturday Night
A 40 percent chance of rain, mainly between midnight and 4am. Cloudy, with a low around 32. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
A chance of rain, then rain and possibly a thunderstorm after 10am. High near 58. Breezy, with a southeast wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Rain, possibly mixed with snow, becoming all snow after 10pm. The snow could be heavy at times. Widespread blowing snow, mainly after 4am. Low around 18. Windy, with a north wind 20 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Monday
Snow likely, mainly before 1pm. Widespread blowing snow, mainly before 11am. Cloudy, with a high near 21. Windy, with a northwest wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Monday Night
Cloudy during the early evening, then gradual clearing, with a low around 4. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph.
Tuesday
Mostly sunny, with a high near 22. West wind around 10 mph.
Tuesday Night
Snow likely, mainly after 1am. Mostly cloudy, with a low around 15. Chance of precipitation is 60%.
Wednesday
A 20 percent chance of snow before 1pm. Partly sunny, with a high near 41.
Wednesday Night
Partly cloudy, with a low around 30.
Thursday
Mostly sunny, with a high near 49.
Thursday Night
Mostly cloudy, with a low around 33.
Friday
Partly sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Beloit WI
 42.54°N 89.1°W (Elev. 889 ft)
Last Update:
3:33 am CDT Mar 14, 2026
Forecast Valid:
3am CDT Mar 14, 2026-6pm CDT Mar 20, 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