Ottawa, Illinois Weather
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Weather Forecast for Ottawa, Illinois : LaSalle County
Issued: 12:41 am CDT Aug 2, 2025 Latitude: 41.3455892 Longitude: -88.8425769 View on Google Maps

MouseOver for Detail Forecast
Overnight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
Cloudy on Overnight Mostly Sunny on Saturday Sunny on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday Mostly Sunny on Wednesday Sunny on Thursday Mostly Sunny on Friday
Low: 54°F High: 77°F High: 79°F High: 81°F High: 83°F High: 84°F High: 86°F High: 88°F
Low: 55°F Low: 58°F Low: 63°F Low: 64°F Low: 66°F Low: 69°F  
Cloudy Mostly Sunny Sunny Mostly Sunny Mostly Sunny Mostly Sunny Sunny Mostly Sunny
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Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
55°
Clear
as of 12:55 AM CDST
Rel. Humidity: 87%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 30.36 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Cloudy on Overnight Overnight... Partly cloudy, with a low around 54. North northeast wind around 5 mph.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 77. East wind around 5 mph, with gusts as high as 10 mph.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 55. East wind around 5 mph becoming calm in the evening.
Sunny on Sunday Sunday... Sunny, with a high near 79. Calm wind becoming east around 5 mph in the morning. Winds could gust as high as 15 mph.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 58. East northeast wind around 5 mph.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 81.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 63.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 83.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 64.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 84.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 66.
Sunny on Thursday Thursday... Sunny, with a high near 86.
Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 69.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 88.
Sun Almanac for Ottawa, Illinois
Sunrise: 05:52 AM
Sunset: 8:11 PM
Civil Sunrise:05:21 AM
Civil Sunset: 8:42 PM
Nautical Sunrise: 04:43 AM
Nautical Sunset: 9:20 PM
Astro Sunrise: 04:01 AM
Astro Sunset: 10:03 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.