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.

Fair

81°F

27°C

Humidity 32%
Wind Speed NE 9 G 18 mph
Barometer 30.06 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 1 Jun 2:01 pm CDT
Extended Forecast for

Ottawa IL

  • This Afternoon

    This Afternoon: A slight chance of sprinkles after 3pm. Partly sunny, with a high near 78. Northeast wind around 10 mph.

    High: 78 °F

    Slight Chance
    Sprinkles

  • Tonight

    Tonight: Mostly clear, with a low around 53. Northeast wind 5 to 10 mph.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. East northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 52. East northeast wind 5 to 10 mph.

    Low: 52 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82. Southeast wind around 5 mph, with gusts as high as 10 mph.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A slight chance of sprinkles after 3pm. Partly sunny, with a high near 78. Northeast wind around 10 mph.
Tonight
Mostly clear, with a low around 53. Northeast wind 5 to 10 mph.
Tuesday
Sunny, with a high near 80. East northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday Night
Mostly clear, with a low around 52. East northeast wind 5 to 10 mph.
Wednesday
Sunny, with a high near 82. Southeast wind around 5 mph, with gusts as high as 10 mph.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Mostly sunny, with a high near 85.
Thursday Night
Partly cloudy, with a low around 65.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 85.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 86.
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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:
1:21 pm CDT Jun 1, 2026
Forecast Valid:
2pm CDT Jun 1, 2026-6pm CDT Jun 7, 2026
 
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