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

37°F

3°C

Humidity 60%
Wind Speed NW 9 mph
Barometer 30.07 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 6 Feb 6:02 pm CST
Extended Forecast for

Ottawa IL

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 12. North wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 12 °F

    Gradual
    Clearing

  • Saturday

    Saturday: Sunny, with a high near 26. North wind around 5 mph becoming calm.

    High: 26 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 20. South southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 20 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 36. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 36 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 24. East southeast wind around 5 mph, with gusts as high as 10 mph.

    Low: 24 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 12. North wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 26. North wind around 5 mph becoming calm.
Saturday Night
Mostly cloudy, with a low around 20. South southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday
Partly sunny, with a high near 36. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 24. East southeast wind around 5 mph, with gusts as high as 10 mph.
Monday
Mostly sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 33.
Tuesday
Mostly sunny, with a high near 55.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 33.
Wednesday
Mostly cloudy, with a high near 42.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
Mostly cloudy, with a high near 38.
Thursday Night
Mostly cloudy, with a low around 24.
Friday
Partly sunny, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ottawa IL
 41.35°N 88.85°W
Last Update:
6:21 pm CST Feb 6, 2026
Forecast Valid:
6pm CST Feb 6, 2026-6pm CST Feb 13, 2026
 
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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