Tracking Winter Weather and Frigid Temperatures This Weekend

Another clipper will drop into the Northern Plains and Upper Midwest into Sunday with snow and gusty winds contributing to some areas of blizzard conditions and snow squalls. Impactful snowfall will occur up and down the East Coast Sunday extending from the western Florida Panhandle to Maine. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

12°F

-11°C

Humidity 79%
Wind Speed W 10 mph
Barometer 30.02 in
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill-1°F (-18°C)
Last update 18 Jan 1:15 am CST
Extended Forecast for

5 Miles SSW Janesville WI

  • Overnight

    Overnight: A slight chance of snow before 2am, then a chance of flurries between 2am and 3am.  Mostly cloudy, with a low around 6. Wind chill values between -5 and -10. West wind around 10 mph.  Chance of precipitation is 20%.

    Low: 6 °F

    Slight Chance
    Snow

  • Sunday

    Sunday: Snow, mainly after 3pm.  High near 18. Wind chill values between -10 and zero. Southwest wind 10 to 15 mph.  Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 18 °F

    Slight Chance
    Snow then
    Snow

  • Sunday Night

    Sunday Night: Snow, mainly before midnight.  Low around -2. Wind chill values between -10 and -20. Windy, with a southwest wind 10 to 15 mph becoming northwest 20 to 25 mph after midnight. Winds could gust as high as 40 mph.  Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: -2 °F

    Snow and
    Breezy then
    Mostly Cloudy
    and Windy

  • M.L.King Day

    M.L.King Day: Mostly sunny and cold, with a high near 5. Wind chill values between -15 and -25. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 5 °F

    Cold and
    Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around -4. West wind 5 to 15 mph.

    Low: -4 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 18. Southwest wind 5 to 10 mph.

    High: 18 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 11. South wind 5 to 10 mph becoming west after midnight.

    Low: 11 °F

    Chance Snow

  • Wednesday

    Wednesday: A 20 percent chance of snow.  Mostly cloudy, with a high near 24. West wind 10 to 15 mph.

    High: 24 °F

    Slight Chance
    Snow

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 4.

    Low: 4 °F

    Decreasing
    Clouds

Detailed Forecast

Overnight
A slight chance of snow before 2am, then a chance of flurries between 2am and 3am. Mostly cloudy, with a low around 6. Wind chill values between -5 and -10. West wind around 10 mph. Chance of precipitation is 20%.
Sunday
Snow, mainly after 3pm. High near 18. Wind chill values between -10 and zero. Southwest wind 10 to 15 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Sunday Night
Snow, mainly before midnight. Low around -2. Wind chill values between -10 and -20. Windy, with a southwest wind 10 to 15 mph becoming northwest 20 to 25 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
M.L.King Day
Mostly sunny and cold, with a high near 5. Wind chill values between -15 and -25. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph.
Monday Night
Partly cloudy, with a low around -4. West wind 5 to 15 mph.
Tuesday
Mostly sunny, with a high near 18. Southwest wind 5 to 10 mph.
Tuesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 11. South wind 5 to 10 mph becoming west after midnight.
Wednesday
A 20 percent chance of snow. Mostly cloudy, with a high near 24. West wind 10 to 15 mph.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 4.
Thursday
Mostly sunny, with a high near 17.
Thursday Night
Mostly cloudy, with a low around 6.
Friday
Partly sunny, with a high near 21.
Friday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 0.
Saturday
A 30 percent chance of snow. Mostly cloudy, with a high near 11.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Janesville WI
 42.63°N 89.04°W (Elev. 804 ft)
12:21 am CST Jan 18, 2026
1am CST Jan 18, 2026-6pm CST Jan 24, 2026
 
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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