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December 18th, 2025 :: 12:04 am MST   

Local Weather Report for
Sidney
Montana, United States

 Sidney Weather Forecast Summary  
 
Today
Dec 18th
Friday
Dec 19th
Saturday
Dec 20th
Sunday
Dec 21st
Monday
Dec 22nd
Flurries Cloudy Mostly Sunny Sunny Cloudy
18°F
39°F
20°F
28°F
15°F
31°F
14°F
34°F
17°F
 
 Sidney Detailed Weather Forecast  
 
Thursday, December 18th, 2025
Overnight Temperature: 8°F
Cloudy with flurries likely. Wind 20 to 30 mph.
Morning Temperature: 11°F
Sunny with a chance of flurries. Windy at times.
Afternoon Temperature: 10°F
A mix of sun and cloud.
Evening Temperature: 16°F
Cloudy. Windy.
Friday, December 19th, 2025
Overnight Temperature: 23°F
Cloudy with a slight chance of flurries. Windy.
Morning Temperature: 36°F
Cloudy. Windy.
Afternoon Temperature: 36°F
Cloudy. Windy.
Evening Temperature: 22°F
A mix of cloudy and clear skies. Windy at times.
Saturday, December 20th, 2025
Overnight Temperature: 20°F
Clear with cloudy periods.
Morning Temperature: 26°F
Sunny.
Afternoon Temperature: 20°F
Sunny.
Evening Temperature: 15°F
Clear.
Sunday, December 21st, 2025
Overnight Temperature: 15°F
Clear.
Morning Temperature: 30°F
Sunny.
Afternoon Temperature: 24°F
Sunny.
Evening Temperature: 23°F
Clear.
Monday, December 22nd, 2025
Overnight Temperature: 23°F
Clear.
Morning Temperature: 34°F
Cloudy.
Afternoon Temperature: 21°F
Cloudy.
Evening Temperature: 18°F
Cloudy.
Tuesday, December 23rd, 2025
Overnight Temperature: 20°F
Cloudy. Windy at times.
Morning Temperature: 29°F
Cloudy. Windy at times.
Afternoon Temperature: 26°F
Cloudy. Windy at times.
Evening Temperature: 24°F
A mix of cloudy and clear skies.
Wednesday, December 24th, 2025
Overnight Temperature: 23°F
A mix of cloudy and clear skies.
Morning Temperature: 31°F
Cloudy.
Afternoon Temperature: 31°F
Cloudy with flurries likely. Windy at times.
Evening Temperature: 28°F
Cloudy with flurries likely. Windy.
Thursday, December 25th, 2025
Overnight Temperature: 23°F
Clear. Windy at times.
Morning Temperature: 29°F
Cloudy. Windy.
Afternoon Temperature: 24°F
Sunny. Windy at times.
Evening Temperature: 20°F
Clear with cloudy periods.





 

  [ Local Weather Report ]
Williston, ND 
 
Glendive, MT 
10:56 PM  9°F
heavy snow moderate freezing fog
 
Wolf Point, MT 
10:53 PM  7°F
light snow moderate freezing fog
 
Dickinson, ND 
10:56 PM  16°F
light snow
 
Regway, SK 
 
Sybouts, SK 
 
Marienthal, SK 
 
Big Muddy, SK 
 
Beaubier, SK 
 
Hoffer, SK 

 
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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