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

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fair

78°F

26°C

Humidity 65%
Wind Speed W 5 mph
Barometer 30.05 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 13 Jul 2:35 pm CDT
Extended Forecast for

Ottawa IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 82. West wind around 5 mph.

    High: 82 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 64. Northwest wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 87. Calm wind becoming southwest around 5 mph.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 66. Calm wind becoming east southeast around 5 mph.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Calm wind becoming south around 5 mph in the morning. Winds could gust as high as 15 mph.

    High: 88 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 88. Chance of precipitation is 40%.

    High: 88 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 71.

    Low: 71 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84.

    High: 84 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 82. West wind around 5 mph.
Tonight
Partly cloudy, with a low around 64. Northwest wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 87. Calm wind becoming southwest around 5 mph.
Monday Night
Mostly clear, with a low around 66. Calm wind becoming east southeast around 5 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Calm wind becoming south around 5 mph in the morning. Winds could gust as high as 15 mph.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 20%.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 88. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Thursday
A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84.
Thursday Night
A chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 66.
Friday
Partly sunny, with a high near 81.
Friday Night
Mostly cloudy, with a low around 65.
Saturday
Partly sunny, with a high near 84.
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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:
2:06 pm CDT Jul 13, 2025
Forecast Valid:
2pm CDT Jul 13, 2025-6pm CDT Jul 19, 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