Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

16°F

-9°C

Humidity	73%
Wind Speed	SE 3 mph
Barometer	30.14 in
Dewpoint	9°F (-13°C)
Visibility	10.00 mi
Last update	20 Jan 8:45 pm CST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

4 Miles WNW Beloit WI

Extreme Cold Watch January 23, 12:00am until January 24, 12:00pm

Winter Weather Advisory until January 21, 06:00am

Click here for hazard details and duration

Extreme Cold Watch

Winter Weather Advisory

Winter Weather Advisory until January 21, 06:00am
NOW until 6:00am Wed
Winter Weather Advisory
Tonight
Low: 12 °F
Heavy Snow
Wednesday
High: 25 °F
Partly Sunny
then Snow
Likely
Wednesday Night
Low: 6 °F
Snow Likely
then Partly
Cloudy
Thursday
High: 16 °F
Mostly Sunny
Thursday Night
Low: -13 °F
Partly Cloudy
Friday
High: -6 °F
Cold
Friday Night
Low: -15 °F
Partly Cloudy
Saturday
High: 1 °F
Cold

Detailed Forecast

Tonight

Snow, mainly before 5am. The snow could be heavy at times. Low around 12. Southeast wind around 5 mph becoming northwest after midnight. Chance of precipitation is 100%. Total nighttime snow accumulation of 2 to 4 inches possible.

Wednesday

Snow likely, mainly after 5pm. Partly sunny, with a high near 25. Northwest wind 5 to 15 mph becoming southwest in the afternoon. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Wednesday Night

Snow likely, mainly before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 6. Wind chill values between -10 and zero. Southwest wind around 15 mph becoming northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Thursday

Mostly sunny, with a high near 16. Wind chill values between -10 and zero. West wind 10 to 15 mph.

Thursday Night

Partly cloudy, with a low around -13. Northwest wind 10 to 15 mph.

Friday

Mostly sunny and cold, with a high near -6. Northwest wind 10 to 15 mph.

Friday Night

Partly cloudy, with a low around -15. Northwest wind around 5 mph.

Saturday

Mostly cloudy and cold, with a high near 1. North wind around 5 mph.

Saturday Night

A 20 percent chance of snow. Mostly cloudy, with a low around -7.