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December 18th, 2025 :: 9:41 am CST   

Local Weather Report for
Mason City
Illinois, United States

 Mason City Weather Forecast Summary  
 
Today
Dec 18th
Friday
Dec 19th
Saturday
Dec 20th
Sunday
Dec 21st
Monday
Dec 22nd
Mix of rain and snow Cloudy Cloudy Cloudy Cloudy
52°F
32°F
22°F
46°F
32°F
33°F
27°F
35°F
29°F
 
 Mason City Detailed Weather Forecast  
 
Thursday, December 18th, 2025
Morning Temperature: 47°F
Cloudy with a few showers. Wind 20 to 30 mph.
Afternoon Temperature: 37°F
Sunny with a chance of showers. Showers possibly mixed with wet flurries. Windy.
Evening Temperature: 26°F
Cloudy. Windy.
Friday, December 19th, 2025
Overnight Temperature: 22°F
Cloudy. Windy.
Morning Temperature: 28°F
A mix of cloud and sun. Windy.
Afternoon Temperature: 28°F
Sunny with cloudy periods.
Evening Temperature: 30°F
Cloudy. Windy at times.
Saturday, December 20th, 2025
Overnight Temperature: 35°F
Cloudy. Windy at times.
Morning Temperature: 42°F
Cloudy. Windy at times.
Afternoon Temperature: 37°F
Sunny. Windy at times.
Evening Temperature: 32°F
Clear. Windy at times.
Sunday, December 21st, 2025
Overnight Temperature: 29°F
Clear. Windy at times.
Morning Temperature: 30°F
Cloudy. Windy at times.
Afternoon Temperature: 28°F
Sunny.
Evening Temperature: 28°F
Cloudy.
Monday, December 22nd, 2025
Overnight Temperature: 29°F
Cloudy. Windy at times.
Morning Temperature: 33°F
Cloudy. Windy at times.
Afternoon Temperature: 35°F
Cloudy. Windy at times.
Evening Temperature: 33°F
A mix of cloudy and clear skies. Windy at times.
Tuesday, December 23rd, 2025
Overnight Temperature: 34°F
Cloudy.
Morning Temperature: 43°F
Cloudy with a slight chance of showers.
Afternoon Temperature: 46°F
Cloudy.
Evening Temperature: 46°F
Cloudy.
Wednesday, December 24th, 2025
Overnight Temperature: 48°F
Cloudy.
Morning Temperature: 58°F
Cloudy. Windy at times.
Afternoon Temperature: 60°F
Cloudy.
Evening Temperature: 62°F
Cloudy with a slight chance of showers. Windy at times.
Thursday, December 25th, 2025
Overnight Temperature: 59°F
Cloudy. Windy at times.
Morning Temperature: 62°F
Cloudy. Windy at times.
Afternoon Temperature: 63°F
Cloudy.
Evening Temperature: 61°F
A mix of cloudy and clear skies with a chance of showers. Windy at times.
Friday, December 26th, 2025
Overnight Temperature: 48°F
Cloudy. Windy.
Morning Temperature: 43°F
Cloudy. Windy at times.
Afternoon Temperature: 39°F
Cloudy. Windy at times.
Evening Temperature: 37°F
Cloudy. Windy at times.





 

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This WeatherCity Weather Forecast for Mason City, 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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