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.

Overcast

56°F

13°C

Humidity 70%
Wind Speed E 7 mph
Barometer 30.10 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 9 Apr 9:55 pm CDT
Extended Forecast for

Ottawa IL

  • Tonight

    Tonight: Rain and thunderstorms likely before midnight, then rain and possibly a thunderstorm between midnight and 4am, then rain after 4am. Steady temperature around 53. North wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 53 °F

    Rain Likely
    then Rain

  • Friday

    Friday: A chance of rain before 7am, then a chance of showers between 7am and 10am. Mostly cloudy, with a high near 59. North wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 40%.

    High: 59 °F

    Chance Rain
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 37. North wind around 5 mph becoming east after midnight. Winds could gust as high as 10 mph.

    Low: 37 °F

    Partly Cloudy

  • Saturday

    Saturday: Increasing clouds, with a high near 62. East southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 62 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 54. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 75. Breezy. Chance of precipitation is 30%.

    High: 75 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Breezy.

    Low: 62 °F

    Chance
    T-storms and
    Breezy

  • Monday

    Monday: A chance of showers before 1pm. Mostly cloudy, with a high near 79.

    High: 79 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Rain and thunderstorms likely before midnight, then rain and possibly a thunderstorm between midnight and 4am, then rain after 4am. Steady temperature around 53. North wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A chance of rain before 7am, then a chance of showers between 7am and 10am. Mostly cloudy, with a high near 59. North wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 40%.
Friday Night
Partly cloudy, with a low around 37. North wind around 5 mph becoming east after midnight. Winds could gust as high as 10 mph.
Saturday
Increasing clouds, with a high near 62. East southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 54. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 75. Breezy. Chance of precipitation is 30%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Breezy.
Monday
A chance of showers before 1pm. Mostly cloudy, with a high near 79.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61.
Wednesday
A chance of showers. Partly sunny, with a high near 75. Breezy.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 52.
Thursday
Mostly sunny, with a high near 76.
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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:
8:46 pm CDT Apr 9, 2026
Forecast Valid:
10pm CDT Apr 9, 2026-6pm CDT Apr 16, 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