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

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Overcast

30°F

-1°C

Humidity 69%
Wind Speed W 13 G 18 mph
Barometer 30.42 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 11 Jan 2:00 pm CST
Extended Forecast for

Tonica IL

  • This Afternoon

    This Afternoon: Cloudy, with a high near 32. West southwest wind around 10 mph, with gusts as high as 15 mph.

    High: 32 °F

    Cloudy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 28. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 28 °F

    Decreasing
    Clouds

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 42. West southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 42 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain after noon. Partly sunny, with a high near 50. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 50 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 31.

    Low: 31 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain and snow before noon, then a chance of snow. Mostly cloudy, with a high near 37. Breezy. Chance of precipitation is 40%.

    High: 37 °F

    Breezy.
    Chance
    Rain/Snow
    then Chance
    Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 15. Blustery.

    Low: 15 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 28.

    High: 28 °F

    Sunny

Detailed Forecast

This Afternoon
Cloudy, with a high near 32. West southwest wind around 10 mph, with gusts as high as 15 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 28. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 42. West southwest wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 33. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
A 20 percent chance of rain after noon. Partly sunny, with a high near 50. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 31.
Wednesday
A chance of rain and snow before noon, then a chance of snow. Mostly cloudy, with a high near 37. Breezy. Chance of precipitation is 40%.
Wednesday Night
Partly cloudy, with a low around 15. Blustery.
Thursday
Sunny, with a high near 28.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 23.
Friday
A chance of snow. Mostly cloudy, with a high near 34.
Friday Night
A chance of snow. Mostly cloudy, with a low around 18.
Saturday
Mostly cloudy, with a high near 24.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tonica IL
 41.23°N 89.06°W
Last Update:
2:11 pm CST Jan 11, 2026
Forecast Valid:
2pm CST Jan 11, 2026-6pm CST Jan 17, 2026
 
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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