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Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Overcast

24°C

75°F

Humidity 94%
Wind Speed W 13 km/h
Barometer 30.01 in
Dewpoint 23°C (73°F)
Visibility 16 km
Last update 16 Aug 7:39 am CDT
Extended Forecast for

Ottawa IL

  • Today

    Today: A slight chance of showers, with thunderstorms also possible after 4pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 29. West northwest wind 10 to 20 km/h. Chance of precipitation is 20%.

    High: 29 °C

    Slight Chance
    T-storms and
    Patchy Fog

  • Tonight

    Tonight: A 10 percent chance of showers before 7pm. Partly cloudy, with a low around 19. Northwest wind 10 to 15 km/h, with gusts as high as 25 km/h.

    Low: 19 °C

    Slight Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 27. Northwest wind 10 to 15 km/h.

    High: 27 °C

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 18. Calm wind.

    Low: 18 °C

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 28. Southwest wind 10 to 20 km/h, with gusts as high as 30 km/h. Chance of precipitation is 30%.

    High: 28 °C

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 19. Chance of precipitation is 70%.

    Low: 19 °C

    Showers
    Likely

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 26.

    High: 26 °C

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 16.

    Low: 16 °C

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 26.

    High: 26 °C

    Mostly Sunny

Detailed Forecast

Today
A slight chance of showers, with thunderstorms also possible after 4pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 29. West northwest wind 10 to 20 km/h. Chance of precipitation is 20%.
Tonight
A 10 percent chance of showers before 7pm. Partly cloudy, with a low around 19. Northwest wind 10 to 15 km/h, with gusts as high as 25 km/h.
Monday
Mostly sunny, with a high near 27. Northwest wind 10 to 15 km/h.
Monday Night
Mostly clear, with a low around 18. Calm wind.
Tuesday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 28. Southwest wind 10 to 20 km/h, with gusts as high as 30 km/h. Chance of precipitation is 30%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 19. Chance of precipitation is 70%.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 26.
Wednesday Night
Partly cloudy, with a low around 16.
Thursday
Mostly sunny, with a high near 26.
Thursday Night
Partly cloudy, with a low around 16.
Friday
Mostly sunny, with a high near 26.
Friday Night
Partly cloudy, with a low around 18.
Saturday
Mostly sunny, with a high near 27.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ottawa IL
 41.35°N 88.85°W
Last Update:
6:06 am CDT Aug 16, 2026
Forecast Valid:
8am CDT Aug 16, 2026-6pm CDT Aug 22, 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