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December 1st, 2025 :: 3:20 pm CST   

Local Weather Report for
Ottawa
Illinois, United States

 Ottawa Weather Forecast Summary  
 
Today
Dec 1st
Tuesday
Dec 2nd
Wednesday
Dec 3rd
Thursday
Dec 4th
Friday
Dec 5th
Flurries Cloudy Cloudy Mix of Sun and Cloud Cloudy
26°F
21°F
8°F
32°F
10°F
11°F
-7°F
27°F
-6°F
 
 Ottawa Detailed Weather Forecast  
 
Monday, December 1st, 2025
Evening Temperature: 24°F
Cloudy with flurries likely.
Tuesday, December 2nd, 2025
Overnight Temperature: 11°F
A mix of cloudy and clear skies.
Morning Temperature: 17°F
Sunny with cloudy periods.
Afternoon Temperature: 8°F
Cloudy.
Evening Temperature: 16°F
Cloudy.
Wednesday, December 3rd, 2025
Overnight Temperature: 23°F
Cloudy. Windy at times.
Morning Temperature: 30°F
Cloudy with a slight chance of flurries or showers. Windy at times.
Afternoon Temperature: 24°F
A mix of sun and cloud. Windy at times.
Evening Temperature: 14°F
Cloudy. Windy at times.
Thursday, December 4th, 2025
Overnight Temperature: -1°F
A mix of clear and cloudy skies.
Morning Temperature: 6°F
Sunny.
Afternoon Temperature: -2°F
Sunny.
Evening Temperature: -7°F
Clear with cloudy periods.
Friday, December 5th, 2025
Overnight Temperature: -3°F
Clear with cloudy periods.
Morning Temperature: 17°F
Cloudy. Windy at times.
Afternoon Temperature: 25°F
Cloudy. Windy at times.
Evening Temperature: 25°F
Cloudy.
Saturday, December 6th, 2025
Overnight Temperature: 23°F
Cloudy with clear periods.
Morning Temperature: 29°F
Cloudy. Windy at times.
Afternoon Temperature: 29°F
Cloudy. Windy at times.
Evening Temperature: 34°F
Cloudy with flurries or showers likely. Risk of freezing rain. Windy at times.
Sunday, December 7th, 2025
Overnight Temperature: 34°F
Cloudy with flurries or showers likely. Risk of freezing rain. Windy.
Morning Temperature: 29°F
Cloudy. Windy.
Afternoon Temperature: 18°F
Cloudy. Windy at times.
Evening Temperature: 14°F
Cloudy. Windy at times.
Monday, December 8th, 2025
Overnight Temperature: 13°F
Cloudy.
Morning Temperature: 21°F
Cloudy.
Afternoon Temperature: 18°F
A mix of cloud and sun.
Evening Temperature: 19°F
Clear with cloudy periods.
Tuesday, December 9th, 2025
Overnight Temperature: 23°F
A mix of cloudy and clear skies. Windy at times.
Morning Temperature: 31°F
Cloudy. Windy at times.
Afternoon Temperature: 32°F
Cloudy.
Evening Temperature: 31°F
Cloudy.





 

  [ Local Weather Report ]
Marseilles, IL 
 
Oglesby, IL 
1:55 PM  25°F
light snow
 
La Salle, IL 
1:55 PM  25°F
light snow
 
Streator, IL 
 
Peru, IL 
1:55 PM  25°F
light snow
 
Mendota, IL 
 
Morris, IL 
1:55 PM  25°F
light snow
 
Sandwich, IL 
 
Plano, IL 
 
Yorkville, IL 

 
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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