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

N/A

Humidity NA
Wind Speed E 5 mph
Barometer 30.04 in
Dewpoint N/A
Visibility 10.00 mi
Last update 29 Mar 10:35 pm CDT
Extended Forecast for

Mark IL

  • Tonight

    Tonight: Mostly clear, with a low around 52. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 64 °F

    Partly Cloudy
    then Chance
    T-storms and
    Breezy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 79. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 80%.

    High: 79 °F

    Breezy.
    Chance
    Showers then
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 43. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 40 percent chance of showers. Mostly cloudy, with a high near 48.

    High: 48 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers. Low around 38. Breezy. Chance of precipitation is 80%.

    Low: 38 °F

    Showers and
    Breezy

  • Thursday

    Thursday: Showers likely. Cloudy, with a high near 54. Breezy. Chance of precipitation is 70%.

    High: 54 °F

    Showers
    Likely and
    Breezy

  • Thursday Night

    Thursday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 52. South wind around 10 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 80. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 79. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 80%.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 43. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 48.
Wednesday Night
Showers. Low around 38. Breezy. Chance of precipitation is 80%.
Thursday
Showers likely. Cloudy, with a high near 54. Breezy. Chance of precipitation is 70%.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 39.
Friday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 62.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 48.
Saturday
Showers likely. Mostly cloudy, with a high near 66. Chance of precipitation is 70%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 42. Breezy. Chance of precipitation is 60%.
Sunday
Partly sunny, with a high near 56. Breezy.
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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:
9:17 pm CDT Mar 29, 2026
Forecast Valid:
11pm CDT Mar 29, 2026-6pm CDT Apr 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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