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	67%
Wind Speed	Vrbl 5 mph
Barometer	30.16 in
Dewpoint	7°F (-14°C)
Visibility	10.00 mi
Wind Chill	8°F (-13°C)
Last update	20 Jan 7:45 pm CST

More Information:

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

Extended Forecast for

2 Miles W Darien WI

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

Winter Weather Advisory January 20, 09:00pm until January 21, 06:00am

Click here for hazard details and duration

Extreme Cold Watch

Winter Weather Advisory

Tonight
Low: 11 °F
Heavy Snow
Wednesday
High: 24 °F
Mostly Cloudy
then Snow
Likely
Wednesday Night
Low: 5 °F
Snow Likely
then Partly
Cloudy
Thursday
High: 15 °F
Mostly Sunny
Thursday Night
Low: -15 °F
Partly Cloudy
Friday
High: -6 °F
Cold
Friday Night
Low: -16 °F
Partly Cloudy
Saturday
High: 1 °F
Cold
Saturday Night
Low: -7 °F
Chance Snow

Detailed Forecast

Tonight

Snow, mainly between 9pm and 5am. The snow could be heavy at times. Low around 11. South 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. Mostly cloudy, with a high near 24. Northwest wind 5 to 15 mph becoming southwest in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Wednesday Night

Snow likely, mainly before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 5. Wind chill values between -10 and zero. West wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Thursday

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

Thursday Night

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

Friday

Mostly sunny and cold, with a high near -6. Northwest wind 5 to 15 mph.

Friday Night

Partly cloudy, with a low around -16. Northwest wind around 5 mph.

Saturday

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

Saturday Night

A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around -7.