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.

Overcast

11°F

-12°C

Humidity 73%
Wind Speed N 8 mph
Barometer 30.33 in
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Wind Chill-1°F (-18°C)
Last update 8 Dec 12:35 am CST
Extended Forecast for

Naplate IL

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 11. North northeast wind around 5 mph becoming calm.

    Low: 11 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 23. Calm wind becoming south around 5 mph in the afternoon. Winds could gust as high as 10 mph.

    High: 23 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a temperature rising to around 27 by 4am. South wind 5 to 15 mph, with gusts as high as 30 mph.

    Low: 18 °F⇑

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 37. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 37 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before midnight. Cloudy, with a low around 34. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    Low: 34 °F

    Rain Likely
    and Breezy

  • Wednesday

    Wednesday: A slight chance of rain and snow before 9am, then a slight chance of snow. Mostly cloudy, with a high near 35. Breezy. Chance of precipitation is 20%.

    High: 35 °F

    Slight Chance
    Rain/Snow and
    Breezy then
    Slight Chance
    Snow

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Thursday

    Thursday: A chance of snow. Mostly cloudy, with a high near 24.

    High: 24 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A chance of snow before midnight. Mostly cloudy, with a low around 7.

    Low: 7 °F

    Chance Snow
    then Mostly
    Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 11. North northeast wind around 5 mph becoming calm.
Monday
Partly sunny, with a high near 23. Calm wind becoming south around 5 mph in the afternoon. Winds could gust as high as 10 mph.
Monday Night
Mostly cloudy, with a temperature rising to around 27 by 4am. South wind 5 to 15 mph, with gusts as high as 30 mph.
Tuesday
Mostly cloudy, with a high near 37. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
Rain likely, mainly before midnight. Cloudy, with a low around 34. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Wednesday
A slight chance of rain and snow before 9am, then a slight chance of snow. Mostly cloudy, with a high near 35. Breezy. Chance of precipitation is 20%.
Wednesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 18.
Thursday
A chance of snow. Mostly cloudy, with a high near 24.
Thursday Night
A chance of snow before midnight. Mostly cloudy, with a low around 7.
Friday
Partly sunny, with a high near 15.
Friday Night
Mostly cloudy, with a low around -1.
Saturday
Partly sunny and cold, with a high near 8.
Saturday Night
Mostly cloudy, with a low around -2.
Sunday
Mostly sunny, with a high near 13.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Naplate IL
 41.33°N 88.88°W
Last Update:
12:11 am CST Dec 8, 2025
Forecast Valid:
12am CST Dec 8, 2025-6pm CST Dec 14, 2025
 
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