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.

Fog

37°F

3°C

Humidity 100%
Wind Speed SW 9 mph
Barometer 29.95 in
Dewpoint 37°F (3°C)
Visibility 0.25 mi
Wind Chill30°F (-1°C)
Last update 16 Feb 5:41 am CST
Extended Forecast for

Tonica IL

Dense Fog Advisory until February 16, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until February 16, 09:00am

    NOW until 9:00am Mon

    Dense Fog Advisory

  • Overnight

    Low: 36 °F

    Areas Fog

  • Washington's Birthday

    Washington's Birthday: Areas of dense fog before 9am. Otherwise, mostly sunny, with a high near 65. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 65 °F

    Areas Dense
    Fog then
    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Increasing clouds, with a low around 42. South wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 42 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 60. Breezy, with a south southeast wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 60 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Tuesday Night

    Tuesday Night: Showers likely, mainly after midnight. Mostly cloudy, with a low around 52. Breezy, with a south wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    Low: 52 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Wednesday

    Wednesday: Sunny, with a high near 65. Breezy.

    High: 65 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of rain after noon. Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny
    then Chance
    Rain

Detailed Forecast

Overnight
Areas of fog. Otherwise, mostly cloudy, with a low around 36. South southwest wind around 5 mph.
Washington's Birthday
Areas of dense fog before 9am. Otherwise, mostly sunny, with a high near 65. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
Increasing clouds, with a low around 42. South wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday
Mostly cloudy, with a high near 60. Breezy, with a south southeast wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 52. Breezy, with a south wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Wednesday
Sunny, with a high near 65. Breezy.
Wednesday Night
Partly cloudy, with a low around 39.
Thursday
A chance of rain after noon. Partly sunny, with a high near 61.
Thursday Night
A chance of rain. Partly cloudy, with a low around 35.
Friday
Partly sunny, with a high near 44.
Friday Night
Mostly cloudy, with a low around 28.
Saturday
Partly sunny, with a high near 41.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tonica IL
 41.21°N 89.06°W
Last Update:
5:43 am CST Feb 16, 2026
Forecast Valid:
5am CST Feb 16, 2026-6pm CST Feb 22, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation