Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Partly Cloudy

81°F

27°C

Humidity 54%
Wind Speed SW 13 mph
Barometer 29.80 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 18 May 3:45 pm CDT
Extended Forecast for

Fort Atkinson WI

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after 9pm.  Cloudy, with a low around 65. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 65 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm.  Cloudy, then gradually becoming mostly sunny, with a high near 72. Southwest wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph.  Chance of precipitation is 30%.

    High: 72 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 44. Northwest wind 10 to 15 mph.

    Low: 44 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 62. North wind 5 to 10 mph.

    High: 62 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 38. East wind around 5 mph becoming calm  in the evening.

    Low: 38 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 61. East wind 5 to 10 mph.

    High: 61 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 44. East wind 5 to 10 mph.

    Low: 44 °F

    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of showers, mainly after 1pm.  Mostly cloudy, with a high near 63. East wind around 10 mph.

    High: 63 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 47. Chance of precipitation is 50%.

    Low: 47 °F

    Chance
    Showers

Detailed Forecast

Tonight
A 50 percent chance of showers and thunderstorms, mainly after 9pm. Cloudy, with a low around 65. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
A slight chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 72. Southwest wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 44. Northwest wind 10 to 15 mph.
Wednesday
Mostly sunny, with a high near 62. North wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 38. East wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 61. East wind 5 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 44. East wind 5 to 10 mph.
Friday
A 40 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 63. East wind around 10 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.
Saturday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 70.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 50.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 54.
Memorial Day
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Fort Atkinson WI
 42.92°N 88.84°W (Elev. 797 ft)
3:32 pm CDT May 18, 2026
3pm CDT May 18, 2026-6pm CDT May 25, 2026
 
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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