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

10°F

-12°C

Humidity 47%
Wind Speed W 16 G 24 mph
Barometer 30.32 in
Dewpoint -6°F (-21°C)
Visibility 10.00 mi
Wind Chill-7°F (-22°C)
Last update 19 Jan 3:59 pm CST
Extended Forecast for

Mark IL

  • M.L.King Day

    M.L.King Day: Mostly sunny and cold, with a high near 10. Wind chill values as low as -10. West wind around 15 mph, with gusts as high as 25 mph.

    High: 10 °F

    Cold

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 4. Wind chill values as low as -5. West wind 5 to 10 mph.

    Low: 4 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Increasing clouds, with a high near 27. Wind chill values as low as -5. Southwest wind 5 to 10 mph.

    High: 27 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 22. South wind 5 to 15 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.

    Low: 22 °F

    Slight Chance
    Snow then
    Chance Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 15.

    Low: 15 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -3.

    Low: -3 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny and cold, with a high near 2.

    High: 2 °F

    Cold

Detailed Forecast

M.L.King Day
Mostly sunny and cold, with a high near 10. Wind chill values as low as -10. West wind around 15 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 4. Wind chill values as low as -5. West wind 5 to 10 mph.
Tuesday
Increasing clouds, with a high near 27. Wind chill values as low as -5. Southwest wind 5 to 10 mph.
Tuesday Night
A 50 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 22. South wind 5 to 15 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.
Wednesday
Mostly sunny, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 15.
Thursday
Mostly sunny, with a high near 24.
Thursday Night
Mostly cloudy, with a low around -3.
Friday
Partly sunny and cold, with a high near 2.
Friday Night
Mostly cloudy, with a low around -9.
Saturday
Partly sunny and cold, with a high near 6.
Saturday Night
Mostly cloudy, with a low around -4.
Sunday
Mostly sunny, with a high near 14.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mark IL
 41.26°N 89.26°W (Elev. 699 ft)
Last Update:
3:16 pm CST Jan 19, 2026
Forecast Valid:
4pm CST Jan 19, 2026-6pm CST Jan 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation