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.

A Few Clouds

68°F

20°C

Humidity 64%
Wind Speed NE 7 mph
Barometer 30.03 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 22 Jun 9:45 am CDT
Extended Forecast for

Fort Atkinson WI

  • Today

    Today: Mostly sunny, with a high near 75. North wind 5 to 10 mph.

    High: 75 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 50. Northeast wind around 5 mph becoming calm in the evening.

    Low: 50 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77. East wind around 5 mph becoming calm.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 57. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 50%.

    Low: 57 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 7am, then showers between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. High near 77. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 56. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 56 °F

    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 76. Northwest wind 5 to 10 mph.

    High: 76 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. Northwest wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 75. North wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 50. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 77. East wind around 5 mph becoming calm.
Tuesday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 57. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 50%.
Wednesday
Showers and possibly a thunderstorm before 7am, then showers between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. High near 77. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 56. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Thursday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 76. Northwest wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 54. Northwest wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 78.
Friday Night
Mostly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fort Atkinson WI
 42.92°N 88.84°W (Elev. 797 ft)
Last Update:
9:47 am CDT Jun 22, 2026
Forecast Valid:
10am CDT Jun 22, 2026-6pm CDT Jun 28, 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