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 and Breezy

47°F

8°C

Humidity 61%
Wind Speed W 21 G 28 mph
Barometer 29.99 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 18 Apr 1:35 pm CDT
Extended Forecast for

Mark IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 50. Breezy, with a west wind around 20 mph, with gusts as high as 30 mph.

    High: 50 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Areas of frost after 3am. Otherwise, clear, with a low around 35. Northwest wind 5 to 15 mph becoming southwest after midnight. Winds could gust as high as 25 mph.

    Low: 35 °F

    Clear then
    Areas Frost

  • Sunday

    Sunday: Widespread frost, mainly before 7am. Otherwise, increasing clouds, with a high near 53. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 53 °F

    Frost then
    Partly Sunny

  • Sunday Night

    Sunday Night: Widespread frost after 5am. Otherwise, mostly clear, with a low around 30. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 30 °F

    Mostly Clear
    then Frost

  • Monday

    Monday: Widespread frost before 8am. Otherwise, sunny, with a high near 57.

    High: 57 °F

    Frost then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 50. Breezy, with a west wind around 20 mph, with gusts as high as 30 mph.
Tonight
Areas of frost after 3am. Otherwise, clear, with a low around 35. Northwest wind 5 to 15 mph becoming southwest after midnight. Winds could gust as high as 25 mph.
Sunday
Widespread frost, mainly before 7am. Otherwise, increasing clouds, with a high near 53. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
Widespread frost after 5am. Otherwise, mostly clear, with a low around 30. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Monday
Widespread frost before 8am. Otherwise, sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Mostly sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Showers likely. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Friday
Showers likely. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.
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:
1:26 pm CDT Apr 18, 2026
Forecast Valid:
1pm CDT Apr 18, 2026-6pm CDT Apr 24, 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