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.

Overcast

40°F

4°C

Humidity 57%
Wind Speed SE 14 mph
Barometer 30.24 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 8 Apr 4:55 am CDT
Extended Forecast for

Mark IL

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 70. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 70 °F

    Decreasing
    Clouds and
    Breezy

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 54. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    Low: 54 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: A 20 percent chance of showers. Mostly sunny, with a high near 70. West wind 5 to 10 mph.

    High: 70 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 49. Northwest wind 5 to 10 mph becoming southeast after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 49 °F

    Showers

  • Friday

    Friday: A 40 percent chance of showers before 1pm. Mostly cloudy, with a high near 60.

    High: 60 °F

    Chance
    Showers

  • Friday Night

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

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 55.

    Low: 55 °F

    Chance
    Showers

  • Sunday

    Sunday: Mostly cloudy, with a high near 78. Breezy.

    High: 78 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 70. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph.
Tonight
A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 54. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 70. West wind 5 to 10 mph.
Thursday Night
Showers and possibly a thunderstorm. Low around 49. Northwest wind 5 to 10 mph becoming southeast after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A 40 percent chance of showers before 1pm. Mostly cloudy, with a high near 60.
Friday Night
Partly cloudy, with a low around 39.
Saturday
Partly sunny, with a high near 64.
Saturday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 55.
Sunday
Mostly cloudy, with a high near 78. Breezy.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 63. Breezy.
Monday
A 50 percent chance of showers. Mostly cloudy, with a high near 79. Breezy.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
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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:
4:41 am CDT Apr 8, 2026
Forecast Valid:
5am CDT Apr 8, 2026-6pm CDT Apr 14, 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