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.

Fog/Mist

45°F

7°C

Humidity 100%
Wind Speed E 8 mph
Barometer 29.92 in
Dewpoint 45°F (7°C)
Visibility 5.00 mi
Wind Chill41°F (5°C)
Last update 4 Apr 12:17 am CDT
Extended Forecast for

Mark IL

  • Overnight

    Overnight: Showers and possibly a thunderstorm before 4am, then showers likely. Temperature rising to around 58 by 4am. East wind 10 to 15 mph becoming south. Winds could gust as high as 20 mph. Chance of precipitation is 90%.

    Low: 54 °F⇑

    T-storms

  • Saturday

    Saturday: A chance of showers before 10am, then a slight chance of showers after 4pm. Mostly cloudy, with a temperature falling to around 48 by 5pm. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    High: 55 °F⇓

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 36. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 36 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 52. West wind around 15 mph, with gusts as high as 25 mph.

    High: 52 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Showers and possibly a thunderstorm before 4am, then showers likely. Temperature rising to around 58 by 4am. East wind 10 to 15 mph becoming south. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Saturday
A chance of showers before 10am, then a slight chance of showers after 4pm. Mostly cloudy, with a temperature falling to around 48 by 5pm. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 36. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
Mostly sunny, with a high near 52. West wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 37.
Monday
Mostly sunny, with a high near 52.
Monday Night
Mostly clear, with a low around 27.
Tuesday
Mostly sunny, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
Partly sunny, with a high near 68. Breezy.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 52. Breezy.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 69. Breezy.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 48.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mark IL
 41.26°N 89.26°W (Elev. 699 ft)
Last Update:
5:31 pm CDT Apr 3, 2026
Forecast Valid:
12am CDT Apr 4, 2026-6pm CDT Apr 10, 2026
 
Forecast Discussion
 
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Additional Resources

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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