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 >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

18°F

-8°C

Humidity 68%
Wind Speed W 3 mph
Barometer 29.91 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Last update 1 Jan 7:45 pm CST
Extended Forecast for

2 Miles W Beloit WI

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 11. West wind around 5 mph.

    Low: 11 °F

    Gradual
    Clearing

  • Friday

    Friday: Mostly sunny, with a high near 22. Northwest wind around 5 mph.

    High: 22 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 15. Calm wind.

    Low: 15 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 26. Calm wind becoming west around 5 mph.

    High: 26 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 11. West wind around 5 mph becoming calm.

    Low: 11 °F

    Partly Cloudy

  • Sunday

    Sunday: Increasing clouds, with a high near 29. Calm wind becoming south around 5 mph in the afternoon.

    High: 29 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 24. South wind 5 to 10 mph.

    Low: 24 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 41. Southwest wind 5 to 10 mph.

    High: 41 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy during the early evening, then gradual clearing, with a low around 11. West wind around 5 mph.
Friday
Mostly sunny, with a high near 22. Northwest wind around 5 mph.
Friday Night
Mostly cloudy, with a low around 15. Calm wind.
Saturday
Mostly cloudy, with a high near 26. Calm wind becoming west around 5 mph.
Saturday Night
Partly cloudy, with a low around 11. West wind around 5 mph becoming calm.
Sunday
Increasing clouds, with a high near 29. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
A 20 percent chance of snow before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 24. South wind 5 to 10 mph.
Monday
Partly sunny, with a high near 41. Southwest wind 5 to 10 mph.
Monday Night
Mostly cloudy, with a low around 31.
Tuesday
Mostly cloudy, with a high near 44.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
Mostly sunny, with a high near 41.
Wednesday Night
Partly cloudy, with a low around 29.
Thursday
A 20 percent chance of rain. Partly sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Beloit WI
 42.52°N 89.05°W (Elev. 751 ft)
Last Update:
7:37 pm CST Jan 1, 2026
Forecast Valid:
8pm CST Jan 1, 2026-6pm CST Jan 8, 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