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Sedan, Montana Weather Forecast
Sedan, Montana Weather
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Weather Forecast for Sedan, Montana : Gallatin County
Issued: 4:03 am MST Dec 17, 2025 Latitude: 45.95882 Longitude: -110.8510509 View on Google Maps

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Today Tonight Thursday Friday Saturday Sunday Monday Tuesday
90% chance of rain & snow on Today Mostly Cloudy on Tonight 40% chance of snow on Thursday 70% 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: 44 °F Low: 21°F High: 37°F High: 45°F High: 33°F High: 37°F High: 43°F High: 40°F
Low: 31°F Low: 21°F Low: 18°F Low: 28°F Low: 26°F  
Rain & Snow Mostly Cloudy Snow Rain & Snow Snow Snow Rain & Snow Rain & Snow
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Current Conditions at
BOZEMAN - (KBZN)
50°
Clear
as of 6:56 AM MST
Rel. Humidity: 53%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.33 in.
Flight Rule: VFR
Wind Data
8 MPH
190° South
Cloud Level(s): Clear
Current Conditions at
LIVINGSTON - (KLVM)
46°
Feels like 35°F
Mostly Cloudy
as of 6:53 AM MST
Rel. Humidity: 61%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.32 in.
Flight Rule: VFR
Wind Data
39 MPH
Gust: 62 MPH
220° Southwest
Cloud Level(s): Few at 6500ft, Scattered at 9500ft, Broken at 11000ft
Current Conditions at
HELENA - (KHLN)
50°
Feels like 42°F
Mostly Cloudy
as of 6:53 AM MST
Rel. Humidity: 53%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.21 in.
Flight Rule: VFR
Wind Data
26 MPH
Gust: 43 MPH
190° South
Cloud Level(s): Scattered at 6500ft, Broken at 9000ft
Current Conditions at
DILLON - (KDLN)
46°
Feels like 40°F
Mostly Cloudy
as of 6:53 AM MST
Rel. Humidity: 52%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.39 in.
Flight Rule: VFR
Wind Data
15 MPH
200° South
Cloud Level(s): Scattered at 5500ft, Broken at 7500ft, Broken at 9500ft
90% chance of rain & snow Today Today... Rain and snow before 11am, then a chance of snow between 11am and 1pm. Temperature rising to near 44 by 10am, then falling to around 28 during the remainder of the day. Windy, with a west wind 20 to 25 mph increasing to 32 to 37 mph in the afternoon. Winds could gust as high as 65 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 21. Windy, with a west wind 28 to 33 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 65 mph.

40% chance of snow Thursday Thursday... A 40 percent chance of snow after 11am. Mostly cloudy, with a high near 37. Southwest wind 7 to 13 mph, with gusts as high as 25 mph. New snow accumulation of less than a half inch possible.

60% chance of rain & snow Thursday Night Thursday Night... A chance of rain and snow before 2am, then a chance of rain between 2am and 5am, then rain likely, possibly mixed with snow after 5am. Mostly cloudy, with a low around 31. Southwest wind 11 to 20 mph, with gusts as high as 46 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

70% chance of rain & snow Friday Friday... Rain likely, possibly mixed with snow, becoming all snow after 8am. Mostly cloudy, with a high near 45. West wind 15 to 20 mph, with gusts as high as 46 mph. Chance of precipitation is 70%. 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 21. West wind 9 to 13 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

30% chance of snow Saturday Saturday... A 30 percent chance of snow, mainly before 11am. Mostly sunny, with a high near 33. West wind 9 to 15 mph, with gusts as high as 30 mph. New snow accumulation of less than a half inch possible.

10% chance of snow Saturday Night Saturday Night... A slight chance of snow. Partly cloudy, with a low around 18. South southwest wind 6 to 10 mph, with gusts as high as 24 mph.

10% chance of snow Sunday Sunday... A slight chance of snow. Partly sunny, with a high near 37.

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 43.

10% chance of rain & snow Monday Night Monday Night... A slight chance of rain and snow. Mostly cloudy, with a low around 26.

10% chance of rain & snow Tuesday Tuesday... A slight chance of rain and snow. Partly sunny, with a high near 40.

Current Radar Image


Sun Almanac for Sedan, Montana
Sunrise: 08:00 AM
Sunset: 4:39 PM
Civil Sunrise:07:26 AM
Civil Sunset: 5:14 PM
Nautical Sunrise: 06:48 AM
Nautical Sunset: 5:52 PM
Astro Sunrise: 06:11 AM
Astro Sunset: 6:28 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.