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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Overcast

24°F

-4°C

Humidity 81%
Wind Speed N 20 G 25 mph
Barometer 30.20 in
Dewpoint 19°F (-7°C)
Visibility 7.00 mi
Wind Chill9°F (-13°C)
Last update 7 Dec 1:15 pm CST
Extended Forecast for

3 Miles SE Naplate IL

  • This Afternoon

    This Afternoon: Patchy blowing snow. Mostly sunny, with a high near 30. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 30 °F

    Patchy
    Blowing Snow

  • Tonight

    Tonight: Mostly cloudy, with a steady temperature around 12. Wind chill values as low as -1. North wind 5 to 10 mph becoming light northeast after midnight.

    Low: 12 °F

    Mostly Cloudy

  • Monday

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

    High: 23 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 14. South wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 14 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 38. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 38 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before midnight. Cloudy, with a low around 33. Breezy. Chance of precipitation is 70%.

    Low: 33 °F

    Rain Likely
    and Breezy

  • Wednesday

    Wednesday: A slight chance of rain and snow showers before noon. Mostly cloudy, with a high near 36. Breezy. Chance of precipitation is 20%.

    High: 36 °F

    Slight Chance
    Rain/Snow and
    Breezy then
    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of snow after noon. Mostly cloudy, with a high near 26.

    High: 26 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

This Afternoon
Patchy blowing snow. Mostly sunny, with a high near 30. North wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, with a steady temperature around 12. Wind chill values as low as -1. North wind 5 to 10 mph becoming light northeast after midnight.
Monday
Partly sunny, with a high near 23. Calm wind becoming southeast around 5 mph in the morning. Winds could gust as high as 10 mph.
Monday Night
Mostly cloudy, with a low around 14. South wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday
Mostly cloudy, with a high near 38. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Rain likely, mainly before midnight. Cloudy, with a low around 33. Breezy. Chance of precipitation is 70%.
Wednesday
A slight chance of rain and snow showers before noon. Mostly cloudy, with a high near 36. Breezy. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 19.
Thursday
A chance of snow after noon. Mostly cloudy, with a high near 26.
Thursday Night
A chance of snow before midnight. Mostly cloudy, with a low around 8.
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 10.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Naplate IL
 41.31°N 88.82°W
Last Update:
1:16 pm CST Dec 7, 2025
Forecast Valid:
1pm CST Dec 7, 2025-6pm CST Dec 13, 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