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

54°F

12°C

Humidity 77%
Wind Speed W 3 mph
Barometer 30.15 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 9 Apr 7:58 am CDT
Extended Forecast for

Mark IL

  • Today

    Today: A slight chance of showers before 10am, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 71. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 71 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 49. Northwest wind 5 to 10 mph becoming east after midnight. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 49 °F

    Showers

  • Friday

    Friday: Showers likely, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 60. North wind around 10 mph. Chance of precipitation is 60%.

    High: 60 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Mostly clear, with a low around 39. North wind around 5 mph becoming east after midnight.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers after 1pm. Mostly cloudy, with a high near 75. Breezy.

    High: 75 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 63. Breezy. Chance of precipitation is 60%.

    Low: 63 °F

    Showers
    Likely and
    Breezy

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80. Chance of precipitation is 30%.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A slight chance of showers before 10am, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 71. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 49. Northwest wind 5 to 10 mph becoming east after midnight. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Showers likely, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 60. North wind around 10 mph. Chance of precipitation is 60%.
Friday Night
Mostly clear, with a low around 39. North wind around 5 mph becoming east after midnight.
Saturday
Partly sunny, with a high near 62.
Saturday Night
Mostly cloudy, with a low around 55.
Sunday
A 40 percent chance of showers after 1pm. Mostly cloudy, with a high near 75. Breezy.
Sunday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 63. Breezy. Chance of precipitation is 60%.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80. Chance of precipitation is 30%.
Monday Night
Showers likely, mainly after 1am. Partly cloudy, with a low around 65. Breezy. Chance of precipitation is 60%.
Tuesday
Showers and possibly a thunderstorm. High near 79. Breezy. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 54. Chance of precipitation is 80%.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 68.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mark IL
 41.26°N 89.26°W (Elev. 699 ft)
Last Update:
3:22 am CDT Apr 9, 2026
Forecast Valid:
8am CDT Apr 9, 2026-6pm CDT Apr 15, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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