National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy

64°F

18°C

Humidity 68%
Wind Speed S 9 mph
Barometer 30.30 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 1 Nov 11:45 am CST
Extended Forecast for

Fort Atkinson WI

  • This Afternoon

    This Afternoon: Isolated sprinkles before 5pm. Mostly sunny, with a high near 68. Southeast wind around 5 mph.

    High: 68 °F

    Isolated
    Sprinkles

  • Tonight

    Tonight: Patchy drizzle between 9pm and 5am. Mostly cloudy, with a low around 51. Southeast wind around 5 mph.

    Low: 51 °F

    Patchy
    Drizzle

  • Monday

    Monday: A 40 percent chance of rain, mainly after 8am. Mostly cloudy, with a high near 65. South wind 5 to 15 mph.

    High: 65 °F

    Chance Rain

  • Monday Night

    Monday Night: A chance of rain before 9pm, then a chance of rain and thunderstorms between 9pm and 3am, then a chance of rain after 3am. Cloudy, with a low around 58. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    Low: 58 °F

    Chance Rain

  • Tuesday

    Tuesday: A chance of rain before noon, then rain and possibly a thunderstorm between noon and 3pm, then rain after 3pm. High near 71. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Breezy.
    Chance Rain
    then Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 53. South wind 10 to 15 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 53 °F

    Rain

  • Wednesday

    Wednesday: Rain likely, mainly before noon. Mostly cloudy, with a high near 62. South wind 10 to 15 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 62 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 46. Southwest wind 5 to 10 mph.

    Low: 46 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 59.

    High: 59 °F

    Chance Rain

Detailed Forecast

This Afternoon
Isolated sprinkles before 5pm. Mostly sunny, with a high near 68. Southeast wind around 5 mph.
Tonight
Patchy drizzle between 9pm and 5am. Mostly cloudy, with a low around 51. Southeast wind around 5 mph.
Monday
A 40 percent chance of rain, mainly after 8am. Mostly cloudy, with a high near 65. South wind 5 to 15 mph.
Monday Night
A chance of rain before 9pm, then a chance of rain and thunderstorms between 9pm and 3am, then a chance of rain after 3am. Cloudy, with a low around 58. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Tuesday
A chance of rain before noon, then rain and possibly a thunderstorm between noon and 3pm, then rain after 3pm. High near 71. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Rain. Low around 53. South wind 10 to 15 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Rain likely, mainly before noon. Mostly cloudy, with a high near 62. South wind 10 to 15 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 46. Southwest wind 5 to 10 mph.
Thursday
A 30 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 59.
Thursday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 41.
Friday
Mostly cloudy, with a high near 53.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Partly sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fort Atkinson WI
 42.92°N 88.84°W (Elev. 797 ft)
Last Update:
12:21 pm CST Nov 1, 2026
Forecast Valid:
12pm CST Nov 1, 2026-6pm CST Nov 7, 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