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.

Fair

34°F

1°C

Humidity 75%
Wind Speed NW 10 mph
Barometer 29.93 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 28 Feb 1:15 am CST
Extended Forecast for

Janesville WI

  • Overnight

    Overnight: Partly cloudy, with a low around 26. Northwest wind 5 to 10 mph.

    Low: 26 °F

    Partly Cloudy

  • Saturday

    Saturday: Snow likely, mainly after noon. Cloudy, with a high near 30. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 30 °F

    Snow Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of snow, mainly before 8pm. Mostly cloudy, with a low around 15. North wind 5 to 10 mph.

    Low: 15 °F

    Chance Snow
    then Mostly
    Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 30. North wind around 5 mph.

    High: 30 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 16. Northeast wind around 5 mph becoming calm in the evening.

    Low: 16 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 41. South wind 5 to 10 mph.

    High: 41 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Rain and snow likely, becoming all snow after 3am. Mostly cloudy, with a low around 29. Southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 29 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Tuesday

    Tuesday: Rain likely, possibly mixed with snow before noon, then a chance of rain. Cloudy, with a high near 41. East wind around 5 mph becoming north in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 41 °F

    Rain/Snow
    Likely then
    Chance Rain

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before midnight. Partly cloudy, with a low around 28.

    Low: 28 °F

    Slight Chance
    Rain then
    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 26. Northwest wind 5 to 10 mph.
Saturday
Snow likely, mainly after noon. Cloudy, with a high near 30. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday Night
A 30 percent chance of snow, mainly before 8pm. Mostly cloudy, with a low around 15. North wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 30. North wind around 5 mph.
Sunday Night
Partly cloudy, with a low around 16. Northeast wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 41. South wind 5 to 10 mph.
Monday Night
Rain and snow likely, becoming all snow after 3am. Mostly cloudy, with a low around 29. Southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Rain likely, possibly mixed with snow before noon, then a chance of rain. Cloudy, with a high near 41. East wind around 5 mph becoming north in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 28.
Wednesday
A 30 percent chance of rain, mainly after noon. Mostly sunny, with a high near 48.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 36.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 54.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 41.
Friday
A 50 percent chance of rain. Cloudy, with a high near 58.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Janesville WI
 42.67°N 89.04°W (Elev. 774 ft)
Last Update:
12:21 am CST Feb 28, 2026
Forecast Valid:
1am CST Feb 28, 2026-6pm CST Mar 6, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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