National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tracking Two Storms Impacting the Northern U.S. Through Thanksgiving and into This Weekend

Heavy lake effect snow, gusty winds, and localized blizzard conditions will persist through Thanksgiving near and downwind of the Great Lakes. Rain and mountain snow are forecast for the Pacific Northwest. Confidence is increasing for another winter storm to develop over the northern and central Rockies Friday and track across the central Plains through the Midwest and Great Lakes this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fair

23°F

-5°C

Humidity 78%
Wind Speed W 10 mph
Barometer 30.36 in
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 28 Nov 2:15 am CST
Extended Forecast for

Mc Nabb IL

Winter Storm Warning November 29, 12:00am until November 30, 06:00am
Click here for hazard details and duration
Winter Storm Warning

  • Overnight

    Overnight: Mostly clear, with a low around 20. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 20 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 32. Northwest wind 5 to 10 mph.

    High: 32 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Snow, mainly after 3am. Steady temperature around 26. Light and variable wind becoming southeast 5 to 10 mph after midnight. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 26 °F

    Slight Chance
    Snow then
    Snow

  • Saturday

    Saturday: Snow. The snow could be heavy at times. High near 32. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    High: 32 °F

    Heavy Snow

  • Saturday Night

    Saturday Night: Snow, mainly before midnight. Low around 24. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 24 °F

    Snow then
    Chance Snow

  • Sunday

    Sunday: Mostly cloudy, with a high near 26.

    High: 26 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 4.

    Low: 4 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 19.

    High: 19 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 8.

    Low: 8 °F

    Chance Snow
    then Mostly
    Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 20. Northwest wind around 10 mph, with gusts as high as 20 mph.
Friday
Increasing clouds, with a high near 32. Northwest wind 5 to 10 mph.
Friday Night
Snow, mainly after 3am. Steady temperature around 26. Light and variable wind becoming southeast 5 to 10 mph after midnight. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Saturday
Snow. The snow could be heavy at times. High near 32. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Saturday Night
Snow, mainly before midnight. Low around 24. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Sunday
Mostly cloudy, with a high near 26.
Sunday Night
Mostly cloudy, with a low around 4.
Monday
Mostly cloudy, with a high near 19.
Monday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 8.
Tuesday
Partly sunny, with a high near 21.
Tuesday Night
Mostly cloudy, with a low around 10.
Wednesday
Mostly cloudy, with a high near 29.
Wednesday Night
Mostly cloudy, with a low around 13.
Thursday
Partly sunny, with a high near 25.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mc Nabb IL
 41.17°N 89.21°W (Elev. 673 ft)
Last Update:
10:41 pm CST Nov 27, 2025
Forecast Valid:
2am CST Nov 28, 2025-6pm CST Dec 4, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation