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.

Mostly Cloudy

70°F

21°C

Humidity 80%
Wind Speed SE 8 mph
Barometer 29.93 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 13 Apr 1:40 pm CDT
Extended Forecast for

Mark IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79. South wind around 15 mph, with gusts as high as 25 mph.

    High: 79 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 67. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 67 °F

    Chance
    T-storms and
    Breezy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly between 2pm and 4pm. Partly sunny, with a high near 81. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 81 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms, mainly before 4am, then showers likely and possibly a thunderstorm after 4am. Low around 64. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 64 °F

    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 74. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 74 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 61. Chance of precipitation is 80%.

    Low: 61 °F

    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76. Chance of precipitation is 40%.

    High: 76 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

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

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79. South wind around 15 mph, with gusts as high as 25 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 67. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly between 2pm and 4pm. Partly sunny, with a high near 81. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
Showers and thunderstorms, mainly before 4am, then showers likely and possibly a thunderstorm after 4am. Low around 64. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 74. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 61. Chance of precipitation is 80%.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76. Chance of precipitation is 40%.
Thursday Night
Mostly clear, with a low around 57.
Friday
Mostly sunny, with a high near 83.
Friday Night
Showers and possibly a thunderstorm. Low around 57. Chance of precipitation is 90%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 65. Breezy.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 55.
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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:
1:46 pm CDT Apr 13, 2026
Forecast Valid:
2pm 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