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December 16th, 2025 :: 4:43 am MST   

Local Weather Report for
Sidney
Montana, United States

 Sidney Weather Forecast Summary  
 
Today
Dec 16th
Wednesday
Dec 17th
Thursday
Dec 18th
Friday
Dec 19th
Saturday
Dec 20th
Mix of Cloud and Sun Mix of rain and snow Flurries Cloudy Mostly Sunny
44°F
44°F
16°F
24°F
9°F
39°F
23°F
22°F
15°F
 
 Sidney Detailed Weather Forecast  
 
Tuesday, December 16th, 2025
Overnight Temperature: 41°F
A mix of clear and cloudy skies. Wind 20 to 30 mph.
Morning Temperature: 36°F
Sunny. Windy.
Afternoon Temperature: 31°F
Mostly sunny.
Evening Temperature: 33°F
A mix of cloudy and clear skies. Windy at times.
Wednesday, December 17th, 2025
Overnight Temperature: 34°F
Cloudy.
Morning Temperature: 43°F
Cloudy. Windy.
Afternoon Temperature: 37°F
Cloudy with a slight chance of showers. Showers possibly mixed with wet flurries. Wind 20 to 30 mph.
Evening Temperature: 21°F
Cloudy with flurries likely. Wind 25 to 40 mph.
Thursday, December 18th, 2025
Overnight Temperature: 9°F
Cloudy with flurries likely. Windy.
Morning Temperature: 15°F
A mix of cloud and sun.
Afternoon Temperature: 16°F
A mix of cloud and sun.
Evening Temperature: 22°F
Cloudy. Windy.
Friday, December 19th, 2025
Overnight Temperature: 29°F
Cloudy with a chance of flurries or showers. Windy.
Morning Temperature: 38°F
Sunny with cloudy periods with a chance of showers. Showers possibly mixed with wet flurries. Windy.
Afternoon Temperature: 29°F
Mostly sunny. Windy.
Evening Temperature: 23°F
Clear. Windy at times.
Saturday, December 20th, 2025
Overnight Temperature: 20°F
Clear. Windy at times.
Morning Temperature: 19°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 16°F
Sunny with cloudy periods.
Evening Temperature: 17°F
Clear with cloudy periods.
Sunday, December 21st, 2025
Overnight Temperature: 21°F
Clear.
Morning Temperature: 29°F
Cloudy.
Afternoon Temperature: 27°F
Cloudy.
Evening Temperature: 28°F
Cloudy.
Monday, December 22nd, 2025
Overnight Temperature: 34°F
Cloudy. Windy at times.
Morning Temperature: 39°F
Cloudy with a chance of showers. Showers possibly mixed with wet flurries.
Afternoon Temperature: 36°F
Cloudy with a slight chance of showers. Showers possibly mixed with wet flurries.
Evening Temperature: 36°F
A mix of cloudy and clear skies.
Tuesday, December 23rd, 2025
Overnight Temperature: 32°F
Cloudy. Windy at times.
Morning Temperature: 31°F
Cloudy.
Afternoon Temperature: 32°F
Cloudy.
Evening Temperature: 33°F
Cloudy.
Wednesday, December 24th, 2025
Overnight Temperature: 31°F
Cloudy.
Morning Temperature: 33°F
A mix of cloud and sun.
Afternoon Temperature: 33°F
Cloudy.
Evening Temperature: 31°F
Cloudy.





 

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Mostly Clear
 
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This WeatherCity Weather Forecast for Sidney, Montana, 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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