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

Significant Coastal Impacts to the Mid-Atlantic and Northeast; Tropical Storm Nolo to Impact Hawaii

A strong coastal storm will bring moderate to major coastal flooding, strong winds, heavy rainfall and high surf to the Mid-Atlantic and New England. Tropical Storm Nolo is expected to strengthen into a hurricane today as it moves north toward the Big Island of Hawaii. Heavy rainfall may produce life-threatening, catastrophic flooding and mudslides. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

70°F

21°C

Humidity 64%
Wind Speed NE 7 mph
Barometer 30.30 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 24 Sep 4:45 pm CDT
Extended Forecast for

Fort Atkinson WI

  • Tonight

    Tonight: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 56. East wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 68. Calm wind becoming east around 5 mph in the afternoon.

    High: 68 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47. East wind around 5 mph becoming calm in the evening.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 68. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 50. East wind around 5 mph becoming calm in the evening.

    Low: 50 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 68. Calm wind.

    High: 68 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 70. Calm wind becoming south around 5 mph.

    High: 70 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 56. East wind around 5 mph becoming calm in the evening.
Friday
Mostly cloudy, with a high near 68. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 47. East wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 68. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 50. East wind around 5 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 68. Calm wind.
Sunday Night
Partly cloudy, with a low around 50. Calm wind.
Monday
Mostly sunny, with a high near 70. Calm wind becoming south around 5 mph.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
A 40 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 69.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Wednesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 67. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 58.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fort Atkinson WI
 42.95°N 88.87°W (Elev. 850 ft)
Last Update:
2:31 pm CDT Sep 24, 2026
Forecast Valid:
5pm CDT Sep 24, 2026-6pm CDT Oct 1, 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