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

Lake Effect Snow through Saturday: A Series of Storms Impact the West

Lake effect snow showers will continue through Saturday downwind of Lakes Erie, Ontario and the eastern portion of Lake Superior. A series of storm systems will continue to impact California and the Pacific Northwest through the weekend and into next week, bringing widespread rainfall, mountain snowfall, and gusty winds. Coastal flooding is expected in northern California. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Partly Cloudy

19°F

-7°C

Humidity 63%
Wind Speed NW 7 mph
Barometer 29.98 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 2 Jan 3:45 pm CST
Extended Forecast for

3 Miles NNW Afton WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 14. Northwest wind around 5 mph.

    Low: 14 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 25. North wind around 5 mph becoming west in the afternoon.

    High: 25 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 9. West wind around 5 mph becoming calm after midnight.

    Low: 9 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 26. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 26 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 22. South wind around 10 mph.

    Low: 22 °F

    Chance Snow
    then Partly
    Cloudy

  • Monday

    Monday: Partly sunny, with a high near 39. Southwest wind 5 to 10 mph.

    High: 39 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30. South wind around 5 mph becoming calm.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 43. Southeast wind around 5 mph becoming west in the afternoon.

    High: 43 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 14. Northwest wind around 5 mph.
Saturday
Mostly cloudy, with a high near 25. North wind around 5 mph becoming west in the afternoon.
Saturday Night
Mostly clear, with a low around 9. West wind around 5 mph becoming calm after midnight.
Sunday
Increasing clouds, with a high near 26. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 22. South wind around 10 mph.
Monday
Partly sunny, with a high near 39. Southwest wind 5 to 10 mph.
Monday Night
Mostly cloudy, with a low around 30. South wind around 5 mph becoming calm.
Tuesday
Partly sunny, with a high near 43. Southeast wind around 5 mph becoming west in the afternoon.
Tuesday Night
Partly cloudy, with a low around 27.
Wednesday
Mostly sunny, with a high near 43.
Wednesday Night
Partly cloudy, with a low around 33.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 46.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 34.
Friday
A 40 percent chance of rain. Mostly cloudy, with a high near 42.
Basemap Options
Click map to change the forecast location
Loading map...
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:
3:13 pm CST Jan 2, 2026
Forecast Valid:
4pm CST Jan 2, 2026-6pm CST Jan 9, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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