Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

9°F

-13°C

Humidity	78%
Wind Speed	W 12 mph
Barometer	30.24 in
Dewpoint	3°F (-16°C)
Visibility	10.00 mi
Wind Chill	-6°F (-21°C)
Last update	30 Dec 6:45 am CST

More Information:

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

Extended Forecast for

Roscoe IL

Today
High: 24 °F
Mostly Cloudy
then Snow
Likely
Tonight
Low: 22 °F⇑
Chance Snow
then Mostly
Cloudy
Wednesday
High: 29 °F
Mostly Cloudy
then Snow
Likely and
Blustery
Wednesday Night
Low: 5 °F
Decreasing
Clouds
New Year's Day
High: 18 °F
Partly Sunny
Thursday Night
Low: 10 °F
Partly Cloudy
Friday
High: 24 °F
Partly Sunny
Friday Night
Low: 11 °F
Mostly Cloudy
Saturday
High: 26 °F
Partly Sunny

Detailed Forecast

Today

Snow likely, mainly after 3pm. Mostly cloudy, with a high near 24. Wind chill values as low as -2. West southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.

Tonight

A 40 percent chance of snow before 9pm. Mostly cloudy, with a temperature rising to around 26 by 9pm. West northwest wind around 10 mph.

Wednesday

Snow likely after noon. Mostly cloudy, with a high near 29. Blustery, with a west northwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

Wednesday Night

Mostly cloudy, then gradually becoming mostly clear, with a low around 5. Wind chill values as low as -5. North northwest wind 5 to 15 mph, with gusts as high as 25 mph.

New Year's Day

Partly sunny, with a high near 18. West northwest wind around 5 mph, with gusts as high as 10 mph.

Thursday Night

Partly cloudy, with a low around 10.

Friday

Partly sunny, with a high near 24.

Friday Night

Mostly cloudy, with a low around 11.

Saturday

Partly sunny, with a high near 26.

Saturday Night

Mostly cloudy, with a low around 17.