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Atlantic City, Montana Weather Forecast
Atlantic City, Montana Weather
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Click for High Wind Warning for Atlantic City, Montana
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Weather Forecast for Atlantic City, Montana : Lewis and Clark County
Issued: 9:43 pm MST Dec 17, 2025 Latitude: 46.7854934 Longitude: -112.4175229 View on Google Maps

MouseOver for Detail Forecast
Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Mostly Cloudy on Tonight 80% chance of snow on Thursday 90% chance of rain & snow on Friday 40% chance of snow on Saturday 20% chance of snow on Sunday Rain and Snow on Monday 20% chance of snow on Tuesday 20% chance of snow on Wednesday
Low: 25°F High: 37°F High: 40°F High: 30°F High: 36°F High: 37°F High: 37°F High: 38°F
Low: 41 °F Low: 22°F Low: 22°F Low: 30°F Low: 24°F Low: 26°F  
Mostly Cloudy Snow Rain & Snow Snow Snow Rain and Snow Snow Snow
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Current Conditions at
BUTTE - (KBTM)
27°
Feels like 16°F
Mostly Cloudy
as of 8:53 PM MST
Rel. Humidity: 53%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 29.92 in.
Flight Rule: VFR
Wind Data
10 MPH
320° Northwest
Cloud Level(s): Broken at 5500ft, Broken at 7000ft
Current Conditions at
GREAT FALLS - (KGTF)
19°
Clear
as of 8:53 PM MST
Rel. Humidity: 85%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
6 MPH
040° Northeast
Cloud Level(s): Clear
Current Conditions at
MISSOULA - (KMSO)
34°
Feels like 24°F
Cloudy
Light Snow
as of 8:53 PM MST
Rel. Humidity: 80%
Dew Point: 28°F
Visibility: 6 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
13 MPH
200° South
Cloud Level(s): Few at 3400ft, Broken at 5000ft, Solid Overcast at 7500ft
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 25. Breezy, with a west wind 20 to 25 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 55 mph.
80% chance of snow Thursday Thursday... Snow, mainly after 2pm. High near 37. Southwest wind 6 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
90% chance of rain & snow Thursday Night Thursday Night... Rain and snow before 11pm, then rain between 11pm and 2am, then rain, possibly mixed with snow after 2am. Temperature rising to around 41 by 2am. Southwest wind 13 to 18 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
90% chance of rain & snow Friday Friday... Rain and snow, becoming all snow after 8am. High near 40. West wind 14 to 17 mph, with gusts as high as 44 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
50% chance of snow Friday Night Friday Night... A 50 percent chance of snow. Mostly cloudy, with a low around 22. West wind 11 to 13 mph, with gusts as high as 30 mph. New snow accumulation of less than a half inch possible.
40% chance of snow Saturday Saturday... A 40 percent chance of snow. Partly sunny, with a high near 30. West southwest wind 13 to 15 mph, with gusts as high as 31 mph. New snow accumulation of less than a half inch possible.
20% chance of snow Saturday Night Saturday Night... A 20 percent chance of snow before 11pm. Partly cloudy, with a low around 22. Southwest wind 8 to 10 mph, with gusts as high as 25 mph.
20% chance of snow Sunday Sunday... A chance of snow after 11am. Mostly sunny, with a high near 36. Southwest wind 5 to 7 mph.
20% chance of rain & snow Sunday Night Sunday Night... A chance of snow before 11pm, then rain likely, possibly mixed with snow. Mostly cloudy, with a low around 30.
Rain and Snow on Monday Monday... Rain and snow likely, becoming all snow after 8am. Mostly cloudy, with a high near 37.
20% chance of snow Monday Night Monday Night... A chance of snow. Mostly cloudy, with a low around 24.
20% chance of snow Tuesday Tuesday... A chance of snow. Partly sunny, with a high near 37.
10% chance of snow Tuesday Night Tuesday Night... A slight chance of snow. Mostly cloudy, with a low around 26.
20% chance of snow Wednesday Wednesday... A chance of snow. Partly sunny, with a high near 38.
Current Radar Image


Sun Almanac for Atlantic City, Montana
Sunrise: 08:10 AM
Sunset: 4:43 PM
Civil Sunrise:07:35 AM
Civil Sunset: 5:18 PM
Nautical Sunrise: 06:56 AM
Nautical Sunset: 5:57 PM
Astro Sunrise: 06:19 AM
Astro Sunset: 6:34 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.