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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fog

34°F

1°C

Humidity 100%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 34°F (1°C)
Visibility 0.25 mi
Last update 30 Apr 2:55 am CDT
Extended Forecast for

4 Miles W Fort Atkinson WI

Frost Advisory until April 30, 08:00am
Click here for hazard details and duration
Frost Advisory
  •  
    Frost Advisory until April 30, 08:00am

    NOW until 8:00am Thu

    Frost Advisory

  • Overnight

    Low: 33 °F

    Frost and
    Patchy Fog

  • Thursday

    Thursday: A 30 percent chance of showers, mainly after 1pm. Patchy fog before 8am. Widespread frost, mainly before 7am. Otherwise, increasing clouds, with a high near 54. West wind 5 to 10 mph.

    High: 54 °F

    Frost and
    Patchy Fog
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers, mainly before 9pm. Widespread frost, mainly after 5am. Otherwise, partly cloudy, with a low around 34. North wind around 5 mph.

    Low: 34 °F

    Chance
    Showers then
    Frost

  • Friday

    Friday: A 20 percent chance of showers after 1pm. Widespread frost, mainly before 7am. Otherwise, mostly sunny, with a high near 50. North wind 5 to 10 mph.

    High: 50 °F

    Frost then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: Widespread frost, mainly after 3am. Otherwise, partly cloudy, with a low around 32. North wind around 5 mph becoming calm in the evening.

    Low: 32 °F

    Partly Cloudy
    then Frost

  • Saturday

    Saturday: Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 55. Light north wind becoming northwest 5 to 10 mph in the morning.

    High: 55 °F

    Frost then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. West wind around 5 mph becoming southwest in the evening.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 65. Southwest wind 5 to 15 mph.

    High: 65 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Overnight
Patchy fog. Widespread frost, mainly after 5am. Otherwise, partly cloudy, with a low around 33. Calm wind.
Thursday
A 30 percent chance of showers, mainly after 1pm. Patchy fog before 8am. Widespread frost, mainly before 7am. Otherwise, increasing clouds, with a high near 54. West wind 5 to 10 mph.
Thursday Night
A 40 percent chance of showers, mainly before 9pm. Widespread frost, mainly after 5am. Otherwise, partly cloudy, with a low around 34. North wind around 5 mph.
Friday
A 20 percent chance of showers after 1pm. Widespread frost, mainly before 7am. Otherwise, mostly sunny, with a high near 50. North wind 5 to 10 mph.
Friday Night
Widespread frost, mainly after 3am. Otherwise, partly cloudy, with a low around 32. North wind around 5 mph becoming calm in the evening.
Saturday
Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 55. Light north wind becoming northwest 5 to 10 mph in the morning.
Saturday Night
Partly cloudy, with a low around 39. West wind around 5 mph becoming southwest in the evening.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 65. Southwest wind 5 to 15 mph.
Sunday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 44.
Monday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 69.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 43.
Tuesday
A 40 percent chance of showers. Mostly sunny, with a high near 63.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 42.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Fort Atkinson WI
 42.93°N 88.93°W (Elev. 853 ft)
Last Update:
2:36 am CDT Apr 30, 2026
Forecast Valid:
3am CDT Apr 30, 2026-6pm CDT May 6, 2026
 
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