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.

Fair

N/A

Humidity NA
Wind Speed W 16 G 23 mph
Barometer 30.21 in
Dewpoint N/A
Visibility 10.00 mi
Last update 5 Apr 10:55 am CDT
Extended Forecast for

Tonica IL

  • Today

    Today: Sunny, with a high near 53. West northwest wind around 15 mph, with gusts as high as 25 mph.

    High: 53 °F

    Sunny

  • Tonight

    Tonight: A slight chance of showers between 1am and 2am. Partly cloudy, with a low around 37. West southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 37 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 52. Northwest wind around 15 mph, with gusts as high as 25 mph.

    High: 52 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 26. North wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 26 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 45. Northeast wind 5 to 10 mph becoming southeast in the afternoon.

    High: 45 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 67. Breezy.

    High: 67 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 54. Breezy.

    Low: 54 °F

    Chance
    Showers and
    Breezy

  • Thursday

    Thursday: A chance of showers. Partly sunny, with a high near 70. Breezy.

    High: 70 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Today
Sunny, with a high near 53. West northwest wind around 15 mph, with gusts as high as 25 mph.
Tonight
A slight chance of showers between 1am and 2am. Partly cloudy, with a low around 37. West southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 52. Northwest wind around 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 26. North wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 45. Northeast wind 5 to 10 mph becoming southeast in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Mostly sunny, with a high near 67. Breezy.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 54. Breezy.
Thursday
A chance of showers. Partly sunny, with a high near 70. Breezy.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 48.
Friday
A chance of showers. Mostly cloudy, with a high near 67.
Friday Night
A chance of showers. Mostly cloudy, with a low around 47.
Saturday
A chance of showers. Mostly cloudy, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tonica IL
 41.21°N 89.06°W
Last Update:
9:10 am CDT Apr 5, 2026
Forecast Valid:
11am CDT Apr 5, 2026-6pm CDT Apr 11, 2026
 
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