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.

Fair

73°F

23°C

Humidity 100%
Wind Speed SW 3 mph
Barometer 29.98 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 16 Aug 3:58 am CDT
Extended Forecast for

Tonica IL

  • Overnight

    Overnight: Showers likely and possibly a thunderstorm before 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 72. West wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 72 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms before 9am, then a slight chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 84. West northwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 67. Northwest wind 5 to 10 mph.

    Low: 67 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80. North wind 5 to 10 mph.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64. West northwest wind around 5 mph becoming calm.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 82. Chance of precipitation is 30%.

    High: 82 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.

    Low: 67 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers before 1pm. Partly sunny, with a high near 77.

    High: 77 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm before 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 72. West wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms before 9am, then a slight chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 84. West northwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 67. Northwest wind 5 to 10 mph.
Monday
Mostly sunny, with a high near 80. North wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 64. West northwest wind around 5 mph becoming calm.
Tuesday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 82. Chance of precipitation is 30%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.
Wednesday
A chance of showers before 1pm. Partly sunny, with a high near 77.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 63.
Saturday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tonica IL
 41.21°N 89.06°W
Last Update:
3:21 am CDT Aug 16, 2026
Forecast Valid:
4am CDT Aug 16, 2026-6pm CDT Aug 22, 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