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Dewey, Montana Weather Forecast
Dewey, Montana Weather
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Weather Forecast for Dewey, Montana : Beaverhead County
Issued: 4:03 am MST Dec 17, 2025 Latitude: 45.777148 Longitude: -112.8550332 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Thursday Friday Saturday Sunday Monday Tuesday
100% chance of rain & snow on Today Mostly Cloudy on Tonight 60% chance of snow on Thursday 90% chance of rain & snow on Friday 30% chance of snow on Saturday 10% chance of snow on Sunday 20% chance of rain & snow on Monday 10% chance of rain & snow on Tuesday
High: 26 °F Low: 21°F High: 40°F High: 43°F High: 32°F High: 38°F High: 42°F High: 41°F
Low: 32°F Low: 20°F Low: 17°F Low: 28°F Low: 23°F  
Rain & Snow Mostly Cloudy Snow Rain & Snow Snow Snow Rain & Snow Rain & Snow
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Current Conditions at
BUTTE - (KBTM)
41°
Feels like 31°F
Mostly Clear
as of 5:53 AM MST
Rel. Humidity: 75%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.41 in.
Flight Rule: VFR
Wind Data
20 MPH
Gust: 33 MPH
190° South
Cloud Level(s): Few at 3900ft
Current Conditions at
DILLON - (KDLN)
45°
Feels like 35°F
Mostly Cloudy
as of 5:53 AM MST
Rel. Humidity: 61%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 29.48 in.
Flight Rule: VFR
Wind Data
23 MPH
Gust: 39 MPH
190° South
Cloud Level(s): Broken at 4500ft
Current Conditions at
SALMON - (KSMN)
48°
Feels like 42°F
Cloudy
Light Rain
as of 5:56 AM MST
Rel. Humidity: 70%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 29.47 in.
Flight Rule: VFR
Wind Data
16 MPH
Gust: 25 MPH
200° South
Cloud Level(s): Solid Overcast at 6500ft
Current Conditions at
HELENA - (KHLN)
52°
Mostly Clear
as of 5:53 AM MST
Rel. Humidity: 43%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.29 in.
Flight Rule: VFR
Wind Data
21 MPH
Gust: 36 MPH
200° South
Cloud Level(s): Few at 12000ft
100% chance of rain & snow Today Today... Rain and snow before 11am, then a chance of snow after 1pm. Temperature falling to around 26 by 5pm. Windy, with a west wind 23 to 33 mph increasing to 33 to 43 mph in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 100%. Total daytime snow accumulation of less than a half inch possible.

Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 21. Windy, with a west wind 25 to 30 mph decreasing to 13 to 18 mph after midnight. Winds could gust as high as 43 mph.

60% chance of snow Thursday Thursday... Snow likely, mainly after 11am. Mostly cloudy, with a high near 40. South southwest wind 10 to 18 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

90% chance of rain & snow Thursday Night Thursday Night... Rain, possibly mixed with snow. Low around 32. Breezy, with a south southwest wind 18 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

90% chance of rain & snow Friday Friday... Rain, possibly mixed with snow, becoming all snow after 8am. High near 43. Breezy, with a southwest wind 18 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

70% chance of snow Friday Night Friday Night... Snow likely, mainly before 11pm. Mostly cloudy, with a low around 20. West wind 14 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

30% chance of snow Saturday Saturday... A 30 percent chance of snow, mainly before 11am. Mostly sunny, with a high near 32. West southwest wind 13 to 18 mph, with gusts as high as 25 mph. Little or no snow accumulation expected.

10% chance of snow Saturday Night Saturday Night... A slight chance of snow before 11pm. Partly cloudy, with a low around 17. Southwest wind 10 to 14 mph, with gusts as high as 18 mph.

10% chance of snow Sunday Sunday... A slight chance of snow after 11am. Mostly sunny, with a high near 38.

20% chance of rain & snow Sunday Night Sunday Night... A chance of snow before 8pm, then a chance of rain and snow. Mostly cloudy, with a low around 28.

20% chance of rain & snow Monday Monday... A chance of rain and snow. Mostly cloudy, with a high near 42.

10% chance of rain & snow Monday Night Monday Night... A slight chance of rain and snow. Mostly cloudy, with a low around 23.

10% chance of rain & snow Tuesday Tuesday... A slight chance of rain and snow. Partly sunny, with a high near 41.

Current Radar Image


Sun Almanac for Dewey, Montana
Sunrise: 08:07 AM
Sunset: 4:48 PM
Civil Sunrise:07:33 AM
Civil Sunset: 5:23 PM
Nautical Sunrise: 06:55 AM
Nautical Sunset: 6:00 PM
Astro Sunrise: 06:19 AM
Astro Sunset: 6:37 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.