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.

Unknown Precip

18°F

-8°C

Humidity 91%
Wind Speed W 6 mph
Barometer 30.06 in
Dewpoint 15°F (-9°C)
Visibility 2.50 mi
Wind Chill10°F (-12°C)
Last update 2 Dec 8:15 am CST
Extended Forecast for

Mark IL

  • Today

    Today: Mostly cloudy, with a high near 23. West wind around 5 mph becoming southwest in the afternoon.

    High: 23 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 18. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 18 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Snow likely, mainly after noon. Cloudy, with a high near 32. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 32 °F

    Slight Chance
    Snow then
    Snow Likely

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around -2. Wind chill values as low as -15. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: -2 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 11.

    High: 11 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around -4.

    Low: -4 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 25.

    High: 25 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 23. West wind around 5 mph becoming southwest in the afternoon.
Tonight
Mostly cloudy, with a low around 18. South wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
Snow likely, mainly after noon. Cloudy, with a high near 32. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around -2. Wind chill values as low as -15. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 11.
Thursday Night
Mostly clear, with a low around -4.
Friday
Partly sunny, with a high near 25.
Friday Night
Mostly cloudy, with a low around 16.
Saturday
Partly sunny, with a high near 27.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 14.
Sunday
Partly sunny, with a high near 23.
Sunday Night
Mostly cloudy, with a low around 10.
Monday
Mostly cloudy, with a high near 26.
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:
8:06 am CST Dec 2, 2025
Forecast Valid:
8am CST Dec 2, 2025-6pm CST Dec 8, 2025
 
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