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.

Fair

18°F

-8°C

Humidity 86%
Wind Speed Calm
Barometer 29.89 in
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Last update 26 Feb 2:15 am CST
Extended Forecast for

3 Miles NNW Afton WI

  • Overnight

    Overnight: Mostly clear, with a low around 16. Calm wind.

    Low: 16 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 41. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 41 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28. Southwest wind 5 to 10 mph.

    Low: 28 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 57. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 57 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Increasing clouds, with a low around 25. West wind 10 to 15 mph becoming north after midnight. Winds could gust as high as 25 mph.

    Low: 25 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Snow likely, mainly after noon. Cloudy, with a high near 29. North wind around 10 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    High: 29 °F

    Snow Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 13. North wind around 10 mph.

    Low: 13 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Increasing clouds, with a high near 28. Northeast wind around 10 mph.

    High: 28 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Cloudy during the early evening, then gradual clearing, with a low around 15.

    Low: 15 °F

    Slight Chance
    Snow then
    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 16. Calm wind.
Thursday
Partly sunny, with a high near 41. Light southwest wind increasing to 5 to 10 mph in the morning.
Thursday Night
Partly cloudy, with a low around 28. Southwest wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 57. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Increasing clouds, with a low around 25. West wind 10 to 15 mph becoming north after midnight. Winds could gust as high as 25 mph.
Saturday
Snow likely, mainly after noon. Cloudy, with a high near 29. North wind around 10 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 13. North wind around 10 mph.
Sunday
Increasing clouds, with a high near 28. Northeast wind around 10 mph.
Sunday Night
A 20 percent chance of snow before midnight. Cloudy during the early evening, then gradual clearing, with a low around 15.
Monday
Partly sunny, with a high near 35.
Monday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 21.
Tuesday
A 20 percent chance of snow. Partly sunny, with a high near 42.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
A 20 percent chance of rain. Partly sunny, with a high near 45.
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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:
1:32 am CST Feb 26, 2026
Forecast Valid:
2am CST Feb 26, 2026-6pm CST Mar 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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