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

67°F

19°C

Humidity 86%
Wind Speed S 9 mph
Barometer 29.92 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 13 Apr 7:55 am CDT
Extended Forecast for

Mark IL

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Mostly cloudy, with a high near 80. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 80 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before midnight, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 66. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 82. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 82 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms. Low around 64. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 64 °F

    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 74. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 74 °F

    Showers then
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 60. Chance of precipitation is 80%.

    Low: 60 °F

    Showers

  • Thursday

    Thursday: A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 76.

    High: 76 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Mostly cloudy, with a high near 80. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tonight
A chance of showers and thunderstorms before midnight, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 66. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 82. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
Showers and thunderstorms. Low around 64. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers and possibly a thunderstorm. High near 74. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers and possibly a thunderstorm. Low around 60. Chance of precipitation is 80%.
Thursday
A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 76.
Thursday Night
Mostly clear, with a low around 57.
Friday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 83.
Friday Night
Showers and possibly a thunderstorm. Low around 55. Chance of precipitation is 80%.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 65.
Saturday Night
Mostly cloudy, with a low around 39.
Sunday
Mostly sunny, with a high near 57.
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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:
6:57 am CDT Apr 13, 2026
Forecast Valid:
8am CDT Apr 13, 2026-6pm CDT Apr 19, 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