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August 19th, 2025 :: 4:03 am CDT   

Local Weather Report for
Ottawa
Illinois, United States

 Ottawa Weather Forecast Summary  
 
Today
Aug 19th
Wednesday
Aug 20th
Thursday
Aug 21st
Friday
Aug 22nd
Saturday
Aug 23rd
Showers Cloudy Sunny Cloudy Cloudy
81°F
78°F
62°F
80°F
61°F
82°F
61°F
76°F
56°F
 
 Ottawa Detailed Weather Forecast  
 
Tuesday, August 19th, 2025
Morning Temperature: 76°F
Cloudy. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 77°F
Cloudy. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 68°F
Clear with cloudy periods.
Wednesday, August 20th, 2025
Overnight Temperature: 64°F
Clear.
Morning Temperature: 76°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 75°F
Cloudy. Windy at times.
Evening Temperature: 62°F
Clear.
Thursday, August 21st, 2025
Overnight Temperature: 63°F
Clear.
Morning Temperature: 76°F
Sunny. Windy at times.
Afternoon Temperature: 76°F
Sunny. Windy at times.
Evening Temperature: 63°F
Clear.
Friday, August 22nd, 2025
Overnight Temperature: 62°F
Clear.
Morning Temperature: 77°F
A mix of sun and cloud.
Afternoon Temperature: 80°F
Mostly sunny.
Evening Temperature: 68°F
Cloudy.
Saturday, August 23rd, 2025
Overnight Temperature: 67°F
Cloudy.
Morning Temperature: 75°F
Sunny. Windy at times.
Afternoon Temperature: 72°F
Sunny. Windy at times.
Evening Temperature: 58°F
Clear.
Sunday, August 24th, 2025
Overnight Temperature: 53°F
Clear.
Morning Temperature: 69°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 69°F
Sunny with cloudy periods. Windy.
Evening Temperature: 52°F
Clear.
Monday, August 25th, 2025
Overnight Temperature: 48°F
Clear.
Morning Temperature: 66°F
Sunny. Windy at times.
Afternoon Temperature: 66°F
Sunny with cloudy periods. Windy at times.
Evening Temperature: 58°F
Cloudy.
Tuesday, August 26th, 2025
Overnight Temperature: 54°F
Clear.
Morning Temperature: 68°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 68°F
Sunny.
Evening Temperature: 54°F
Clear.
Wednesday, August 27th, 2025
Overnight Temperature: 51°F
Clear.
Morning Temperature: 71°F
Sunny.
Afternoon Temperature: 74°F
A mix of cloud and sun.
Evening Temperature: 61°F
Clear with cloudy periods.





 

  [ Local Weather Report ]
Marseilles, IL 
 
Oglesby, IL 
2:55 AM  75°F
Overcast
 
La Salle, IL 
2:55 AM  75°F
Overcast
 
Streator, IL 
 
Peru, IL 
2:55 AM  75°F
Overcast
 
Mendota, IL 
 
Morris, IL 
2:55 AM  72°F
Mostly Cloudy
 
Sandwich, IL 
2:52 AM  73°F
mist
 
Plano, IL 
2:52 AM  73°F
mist
 
Yorkville, IL 
2:52 AM  73°F
mist

This WeatherCity Weather Forecast for Ottawa, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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