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.

Fog/Mist

41°F

5°C

Humidity 93%
Wind Speed SE 8 mph
Barometer 29.79 in
Dewpoint 39°F (4°C)
Visibility 2.50 mi
Wind Chill36°F (2°C)
Last update 27 Dec 8:45 pm CST
Extended Forecast for

3 Miles NNW Afton WI

Wind Advisory December 28, 06:00pm until December 29, 06:00pm
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: A chance of drizzle before 3am, then a slight chance of drizzle after 5am. Widespread fog. Otherwise, cloudy, with a low around 41. Southeast wind 5 to 10 mph.

    Low: 41 °F

    Chance
    Drizzle and
    Fog

  • Sunday

    Sunday: Rain, mainly after 8am. Widespread fog, mainly before 11am. High near 52. Southeast wind 5 to 10 mph becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 52 °F

    Rain and Fog

  • Sunday Night

    Sunday Night: Rain before 7pm, then snow, possibly mixed with rain between 7pm and 8pm, then snow after 8pm. Widespread blowing snow, mainly after 3am. Low around 14. Wind chill values between -5 and 5. Windy, with a west wind 20 to 30 mph, with gusts as high as 50 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    Low: 14 °F

    Rain/Snow and
    Patchy
    Blowing Snow
    then Snow and
    Blowing Snow

  • Monday

    Monday: A 50 percent chance of snow before noon. Patchy blowing snow. Mostly cloudy, with a high near 20. Wind chill values between -5 and zero. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 45 mph.

    High: 20 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Monday Night

    Monday Night: Patchy blowing snow before 7pm. Partly cloudy, with a low around 7. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 7 °F

    Patchy
    Blowing Snow
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 24. West wind 10 to 15 mph.

    High: 24 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 18. West wind 10 to 15 mph.

    Low: 18 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 28. Northwest wind 10 to 15 mph.

    High: 28 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 8.

    Low: 8 °F

    Chance Snow

Detailed Forecast

Tonight
A chance of drizzle before 3am, then a slight chance of drizzle after 5am. Widespread fog. Otherwise, cloudy, with a low around 41. Southeast wind 5 to 10 mph.
Sunday
Rain, mainly after 8am. Widespread fog, mainly before 11am. High near 52. Southeast wind 5 to 10 mph becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain before 7pm, then snow, possibly mixed with rain between 7pm and 8pm, then snow after 8pm. Widespread blowing snow, mainly after 3am. Low around 14. Wind chill values between -5 and 5. Windy, with a west wind 20 to 30 mph, with gusts as high as 50 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Monday
A 50 percent chance of snow before noon. Patchy blowing snow. Mostly cloudy, with a high near 20. Wind chill values between -5 and zero. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 45 mph.
Monday Night
Patchy blowing snow before 7pm. Partly cloudy, with a low around 7. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday
Increasing clouds, with a high near 24. West wind 10 to 15 mph.
Tuesday Night
Mostly cloudy, with a low around 18. West wind 10 to 15 mph.
Wednesday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 28. Northwest wind 10 to 15 mph.
Wednesday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 8.
New Year's Day
Mostly sunny, with a high near 16.
Thursday Night
Mostly clear, with a low around 4.
Friday
Mostly sunny, with a high near 21.
Friday Night
Mostly cloudy, with a low around 12.
Saturday
Partly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Afton WI
 42.74°N 89.12°W (Elev. 948 ft)
Last Update:
8:41 pm CST Dec 27, 2025
Forecast Valid:
9pm CST Dec 27, 2025-6pm CST Jan 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation