National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Partly Cloudy

47°F

8°C

Humidity 72%
Wind Speed S 8 mph
Barometer 29.96 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 16 Feb 9:15 pm CST
Extended Forecast for

Mc Nabb IL

  • Tonight

    Tonight: Partly cloudy, with a low around 43. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 61. Breezy, with a southeast wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 61 °F

    Mostly Cloudy
    then Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain. Cloudy, then gradually becoming partly cloudy, with a low around 50. Breezy, with a southeast wind 15 to 20 mph becoming southwest after midnight. Winds could gust as high as 30 mph.

    Low: 50 °F

    Chance Rain
    and Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 65. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 65 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Rain likely after noon. Partly sunny, with a high near 64. Chance of precipitation is 60%.

    High: 64 °F

    Partly Sunny
    then Rain
    Likely

  • Thursday Night

    Thursday Night: Rain likely, mainly before midnight. Partly cloudy, with a low around 35. Chance of precipitation is 60%.

    Low: 35 °F

    Rain Likely

  • Friday

    Friday: A 30 percent chance of rain before noon. Partly sunny, with a high near 44. Breezy.

    High: 44 °F

    Breezy.
    Chance Rain
    then Partly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 43. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 61. Breezy, with a southeast wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night
A 50 percent chance of rain. Cloudy, then gradually becoming partly cloudy, with a low around 50. Breezy, with a southeast wind 15 to 20 mph becoming southwest after midnight. Winds could gust as high as 30 mph.
Wednesday
Sunny, with a high near 65. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly cloudy, with a low around 41.
Thursday
Rain likely after noon. Partly sunny, with a high near 64. Chance of precipitation is 60%.
Thursday Night
Rain likely, mainly before midnight. Partly cloudy, with a low around 35. Chance of precipitation is 60%.
Friday
A 30 percent chance of rain before noon. Partly sunny, with a high near 44. Breezy.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Partly sunny, with a high near 42.
Saturday Night
Mostly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 37.
Sunday Night
Partly cloudy, with a low around 19.
Monday
Sunny, with a high near 37.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mc Nabb IL
 41.17°N 89.21°W (Elev. 673 ft)
Last Update:
9:21 pm CST Feb 16, 2026
Forecast Valid:
9pm CST Feb 16, 2026-6pm CST Feb 23, 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