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Armstead, Montana Weather Forecast
Armstead, Montana Weather
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Weather Forecast for Armstead, Montana : Beaverhead County
Issued: 9:43 pm MST Dec 17, 2025 Latitude: 44.9724206 Longitude: -112.8641913 View on Google Maps

MouseOver for Detail Forecast
Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Mostly Cloudy on Tonight 60% chance of snow on Thursday 70% chance of rain & snow on Friday Sunny on Saturday 10% chance of snow on Sunday 20% chance of rain & snow on Monday Partly Sunny on Tuesday 20% chance of rain & snow on Wednesday
Low: 24°F High: 40°F High: 48°F High: 33°F High: 39°F High: 43°F High: 41°F High: 44°F
Low: 35 °F Low: 20°F Low: 19°F Low: 32°F Low: 25°F Low: 29°F  
Mostly Cloudy Snow Rain & Snow Sunny Snow Rain & Snow Partly Sunny Rain & Snow
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Current Conditions at
DILLON - (KDLN)
30°
Feels like 17°F
Clear
as of 8:53 PM MST
Rel. Humidity: 39%
Dew Point: 9°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
22 MPH
Gust: 35 MPH
260° West
Cloud Level(s): Clear
Current Conditions at
SALMON - (KSMN)
32°
Mostly Cloudy
as of 8:56 PM MST
Rel. Humidity: 63%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
7 MPH
340° North
Cloud Level(s): Broken at 7000ft, Broken at 8000ft
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
CHALLIS - (KLLJ)
30°
Cloudy
as of 8:55 PM MST
Rel. Humidity: 39%
Dew Point: 9°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
6 MPH
280° West
Cloud Level(s): Solid Overcast at 7500ft
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 24. Breezy, with a west wind 19 to 24 mph becoming south 9 to 14 mph after midnight. Winds could gust as high as 43 mph.
60% chance of snow Thursday Thursday... Snow likely, mainly after 4pm. Cloudy, with a high near 40. South southeast wind 9 to 14 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
70% chance of rain & snow Thursday Night Thursday Night... Snow likely before 8pm, then rain and snow likely between 8pm and 11pm, then a chance of rain after 11pm. Mostly cloudy, with a temperature falling to near 35 by 9pm, then rising to around 43 during the remainder of the night. Breezy, with a south wind 22 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
70% chance of rain & snow Friday Friday... Rain likely before 2pm, then rain likely, possibly mixed with snow. Mostly cloudy, with a high near 48. Breezy, with a southwest wind 22 to 24 mph, with gusts as high as 38 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
50% chance of rain & snow Friday Night Friday Night... A chance of rain and snow before 8pm, then a chance of snow between 8pm and 11pm. Mostly cloudy, with a low around 20. West southwest wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Sunny on Saturday Saturday... Sunny, with a high near 33. Southwest wind 11 to 15 mph, with gusts as high as 21 mph.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 19. South wind 10 to 13 mph, with gusts as high as 20 mph.
10% chance of snow Sunday Sunday... A slight chance of snow after 11am. Partly sunny, with a high near 39. South wind 10 to 14 mph, with gusts as high as 18 mph.
20% chance of rain & snow Sunday Night Sunday Night... A chance of rain and snow. Mostly cloudy, with a low around 32.
20% chance of rain & snow Monday Monday... A chance of rain and snow. Partly sunny, with a high near 43.
10% chance of rain & snow Monday Night Monday Night... A slight chance of rain and snow. Mostly cloudy, with a low around 25.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 41.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 29.
20% chance of rain & snow Wednesday Wednesday... A chance of rain and snow. Partly sunny, with a high near 44.
Current Radar Image


Sun Almanac for Armstead, Montana
Sunrise: 08:05 AM
Sunset: 4:51 PM
Civil Sunrise:07:31 AM
Civil Sunset: 5:25 PM
Nautical Sunrise: 06:54 AM
Nautical Sunset: 6:03 PM
Astro Sunrise: 06:18 AM
Astro Sunset: 6:38 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.