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

59°F

15°C

Humidity 76%
Wind Speed E 8 mph
Barometer 30.20 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 16 Oct 1:55 am CDT
Extended Forecast for

Ottawa IL

  • Overnight

    Overnight: Cloudy, with a low around 56. East wind 5 to 10 mph.

    Low: 56 °F

    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 73. Southeast wind 5 to 10 mph.

    High: 73 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57. East southeast wind 5 to 10 mph.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 79. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 79 °F

    Partly Sunny

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Low: 62 °F

    Mostly Cloudy
    then Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 74. Chance of precipitation is 80%.

    High: 74 °F

    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.

    Low: 48 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers before 1pm. Mostly sunny, with a high near 59. Breezy.

    High: 59 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 41.

    Low: 41 °F

    Clear

Detailed Forecast

Overnight
Cloudy, with a low around 56. East wind 5 to 10 mph.
Thursday
Partly sunny, with a high near 73. Southeast wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 57. East southeast wind 5 to 10 mph.
Friday
Partly sunny, with a high near 79. South wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Saturday
Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 74. Chance of precipitation is 80%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.
Sunday
A chance of showers before 1pm. Mostly sunny, with a high near 59. Breezy.
Sunday Night
Clear, with a low around 41.
Monday
Sunny, with a high near 68.
Monday Night
A chance of showers. Partly cloudy, with a low around 49.
Tuesday
A chance of showers. Mostly sunny, with a high near 64.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Sunny, with a high near 60.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ottawa IL
 41.35°N 88.85°W
Last Update:
1:46 am CDT Oct 16, 2025
Forecast Valid:
2am CDT Oct 16, 2025-6pm CDT Oct 22, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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