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

25°F

-4°C

Humidity	74%
Wind Speed	SW 10 mph
Barometer	29.87 in
Dewpoint	18°F (-8°C)
Visibility	10.00 mi
Wind Chill	15°F (-9°C)
Last update	21 Jan 4:45 pm CST

More Information:

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

Extended Forecast for

5 Miles SSW Janesville WI

Extreme Cold Watch January 23, 01:00pm until January 24, 12:00pm

Extreme Cold Warning January 23, 12:00am until January 23, 01:00pm

Click here for hazard details and duration

Extreme Cold Watch

Extreme Cold Warning

This Afternoon
High: 23 °F
Snow Likely
Tonight
Low: 9 °F
Snow and
Patchy
Blowing Snow
then Partly
Cloudy
Thursday
High: 19 °F
Breezy.
Chance
Flurries then
Slight Chance
Snow
Thursday Night
Low: -16 °F
Mostly Clear
Friday
High: -6 °F
Cold
Friday Night
Low: -14 °F
Mostly Cloudy
Saturday
High: 3 °F
Mostly Cloudy
then Slight
Chance Snow
Saturday Night
Low: -3 °F
Chance Snow
Sunday
High: 11 °F
Chance Snow

Detailed Forecast

This Afternoon

Snow likely. Cloudy, with a high near 23. Calm wind. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.

Tonight

Snow, mainly before 10pm. Patchy blowing snow between 9pm and 10pm. Low around 9. Wind chill values between zero and 5. West wind 5 to 10 mph increasing to 10 to 15 mph in the evening. Winds could gust as high as 35 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

Thursday

A chance of flurries between 9am and 2pm, then a slight chance of snow after 2pm. Partly sunny, with a high near 19. Wind chill values between -5 and 5. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

Thursday Night

Mostly clear, with a low around -16. Wind chill values between -25 and -35. Northwest wind around 15 mph, with gusts as high as 30 mph.

Friday

Sunny and cold, with a high near -6. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

Friday Night

Mostly cloudy, with a low around -14. North wind around 5 mph.

Saturday

A 20 percent chance of snow after noon. Mostly cloudy and cold, with a high near 3. North wind around 5 mph.

Saturday Night

A 40 percent chance of snow. Mostly cloudy, with a low around -3. North wind around 5 mph.

Sunday

A 30 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 11.