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

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Overcast and Breezy

29°F

-2°C

Humidity 65%
Wind Speed W 21 G 29 mph
Barometer 30.23 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 27 Nov 3:35 am CST
Extended Forecast for

Tonica IL

Winter Storm Watch November 29, 03:00am until November 30, 06:00am
Click here for hazard details and duration
Winter Storm Watch

  • Overnight

    Overnight: Mostly cloudy, with a low around 25. West northwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 25 °F

    Mostly Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Mostly cloudy, with a high near 34. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 34 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 21. West northwest wind 10 to 15 mph.

    Low: 21 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 32. West northwest wind 5 to 10 mph becoming light west southwest in the afternoon. Winds could gust as high as 15 mph.

    High: 32 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Snow likely after midnight. Mostly cloudy, with a low around 22. Light and variable wind becoming southeast 5 to 10 mph after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 70%.

    Low: 22 °F

    Mostly Cloudy
    then Snow
    Likely

  • Saturday

    Saturday: Snow. The snow could be heavy at times. High near 31. Chance of precipitation is 100%.

    High: 31 °F

    Heavy Snow

  • Saturday Night

    Saturday Night: Snow. Low around 25. Chance of precipitation is 100%.

    Low: 25 °F

    Snow then
    Snow Likely

  • Sunday

    Sunday: A chance of snow before noon. Mostly cloudy, with a high near 28.

    High: 28 °F

    Chance Snow
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 5.

    Low: 5 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 25. West northwest wind around 15 mph, with gusts as high as 25 mph.
Thanksgiving Day
Mostly cloudy, with a high near 34. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Thursday Night
Partly cloudy, with a low around 21. West northwest wind 10 to 15 mph.
Friday
Mostly sunny, with a high near 32. West northwest wind 5 to 10 mph becoming light west southwest in the afternoon. Winds could gust as high as 15 mph.
Friday Night
Snow likely after midnight. Mostly cloudy, with a low around 22. Light and variable wind becoming southeast 5 to 10 mph after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 70%.
Saturday
Snow. The snow could be heavy at times. High near 31. Chance of precipitation is 100%.
Saturday Night
Snow. Low around 25. Chance of precipitation is 100%.
Sunday
A chance of snow before noon. Mostly cloudy, with a high near 28.
Sunday Night
Mostly cloudy, with a low around 5.
Monday
Partly sunny, with a high near 17.
Monday Night
Mostly cloudy, with a low around 6.
Tuesday
Partly sunny, with a high near 21.
Tuesday Night
Mostly cloudy, with a low around 10.
Wednesday
Mostly cloudy, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tonica IL
 41.21°N 89.06°W
Last Update:
3:35 am CST Nov 27, 2025
Forecast Valid:
3am CST Nov 27, 2025-6pm CST Dec 3, 2025
 
Forecast Discussion
 
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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