Powerful Winter Storm from the Upper Midwest into the Northeast; Severe Thunderstorms in the Midwest and Ohio Valley

A rapidly-intensifying storm is expected to bring heavy snow, blizzard conditions, and icing from the Upper Midwest through the Great Lakes and Northeast. Scattered severe thunderstorms may produce severe/damaging wind gusts and a couple of tornadoes across parts of the Midwest and lower Ohio Valley through the evening. Arctic air will expand across the central and southern U.S.. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast with Haze and Breezy

18°F

-8°C

Humidity	79%
Wind Speed	W 21 G 28 mph
Barometer	29.72 in
Dewpoint	12°F (-11°C)
Visibility	4.00 mi
Wind Chill	1°F (-17°C)
Last update	29 Dec 4:50 am CST

More Information:

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

Extended Forecast for

Rockton IL

Wind Advisory December 29, 05:21am until December 29, 12:00pm

Winter Weather Advisory December 29, 05:21am until December 29, 10:00am

Click here for hazard details and duration

Wind Advisory

Winter Weather Advisory

Wind Advisory December 29, 05:21am until December 29, 12:00pm
Winter Weather Advisory December 29, 05:21am until December 29, 10:00am
NOW: Multiple hazards in effect
Click HERE for Details
Overnight
Low: 16 °F
Snow and
Areas Blowing
Snow
Monday
High: 18 °F
Snow and
Areas Blowing
Snow
Monday Night
Low: 11 °F
Decreasing
Clouds
Tuesday
High: 27 °F
Mostly Sunny
then Slight
Chance Snow
Tuesday Night
Low: 21 °F
Mostly Cloudy
Wednesday
High: 29 °F
Cloudy then
Chance Snow
Wednesday Night
Low: 5 °F
Partly Cloudy
New Year's Day
High: 16 °F
Mostly Sunny

Detailed Forecast

Overnight

Snow. Areas of blowing snow. Low around 16. Wind chill values as low as -1. Windy, with a west northwest wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of less than one inch possible.

Monday

Snow before 8am, then a chance of flurries after 9am. Areas of blowing snow before 8am. High near 18. Wind chill values as low as -1. Windy, with a northwest wind 25 to 30 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Monday Night

Cloudy, then gradually becoming partly cloudy, with a low around 11. Wind chill values as low as zero. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

Tuesday

A 20 percent chance of snow after noon. Increasing clouds, with a high near 27. Wind chill values as low as -1. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.

Tuesday Night

Mostly cloudy, with a low around 21. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

Wednesday

A 40 percent chance of snow after noon. Cloudy, with a high near 29.

Wednesday Night

Partly cloudy, with a low around 5.

New Year's Day

Mostly sunny, with a high near 16.

Thursday Night

Mostly cloudy, with a low around 7.

Friday

Partly sunny, with a high near 22.