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

33°F

1°C

Humidity 98%
Wind Speed S 9 mph
Barometer 29.95 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 8 Mar 4:50 am CDT
Extended Forecast for

Mark IL

  • Today

    Today: Sunny, with a high near 63. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 63 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Clear, with a low around 46. Southwest wind around 15 mph, with gusts as high as 30 mph.

    Low: 46 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 71. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52. Southwest wind around 10 mph.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 78. Chance of precipitation is 70%.

    High: 78 °F

    Sunny then
    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 1am, then rain and possibly a thunderstorm after 1am. Low around 42. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 42 °F

    T-storms

  • Wednesday

    Wednesday: Rain before 1pm, then a chance of rain and snow. High near 54. Breezy. Chance of precipitation is 90%.

    High: 54 °F

    Breezy. Rain
    then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 63. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph.
Tonight
Clear, with a low around 46. Southwest wind around 15 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 71. Southwest wind around 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 52. Southwest wind around 10 mph.
Tuesday
Showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 78. Chance of precipitation is 70%.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then rain and possibly a thunderstorm after 1am. Low around 42. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Wednesday
Rain before 1pm, then a chance of rain and snow. High near 54. Breezy. Chance of precipitation is 90%.
Wednesday Night
Partly cloudy, with a low around 26.
Thursday
Mostly sunny, with a high near 46.
Thursday Night
A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 40. Breezy.
Friday
Partly sunny, with a high near 56. Breezy.
Friday Night
Mostly cloudy, with a low around 31.
Saturday
Mostly cloudy, with a high near 44.
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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:
4:26 am CDT Mar 8, 2026
Forecast Valid:
5am CDT Mar 8, 2026-6pm CDT Mar 14, 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