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

89°F

32°C

Humidity 30%
Wind Speed SW 6 mph
Barometer 30.11 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 3 Oct 4:55 pm CDT
Extended Forecast for

Tonica IL

  • Tonight

    Tonight: Mostly clear, with a low around 64. South wind around 5 mph.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 61. South wind around 10 mph, with gusts as high as 15 mph.

    Low: 61 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 86. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 63. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Clear

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.

    Low: 57 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers before 1pm. Partly sunny, with a high near 70.

    High: 70 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 64. South wind around 5 mph.
Saturday
Sunny, with a high near 88. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Clear, with a low around 61. South wind around 10 mph, with gusts as high as 15 mph.
Sunday
Sunny, with a high near 86. South wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Clear, with a low around 63. South wind around 10 mph, with gusts as high as 20 mph.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.
Tuesday
A chance of showers before 1pm. Partly sunny, with a high near 70.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 70.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 47.
Friday
Mostly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tonica IL
 41.21°N 89.06°W
Last Update:
4:41 pm CDT Oct 3, 2025
Forecast Valid:
5pm CDT Oct 3, 2025-6pm CDT Oct 10, 2025
 
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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