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Decker, Montana Weather Forecast
Decker, Montana Weather
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Weather Forecast for Decker, Montana : Big Horn County
Issued: 2:13 am MST Dec 17, 2025 Latitude: 45.0119184 Longitude: -106.8634011 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Mostly Cloudy on Overnight 50% chance of rain & snow on Wednesday Increasing Clouds on Thursday 80% chance of rain & snow on Friday 30% chance of snow on Saturday Partly Sunny on Sunday Partly Sunny on Monday Partly Sunny on Tuesday
Low: 34°F High: 56°F High: 37°F High: 56°F High: 39°F High: 40°F High: 49°F High: 44°F
Low: 20°F Low: 27 °F Low: 23°F Low: 17°F Low: 22°F Low: 24°F  
Mostly Cloudy Rain & Snow Increasing Clouds Rain & Snow Snow Partly Sunny Partly Sunny Partly Sunny
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Current Conditions at
BUFFALO - (KBYG)
46°
Feels like 41°F
Clear
as of 1:53 AM MST
Rel. Humidity: 31%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 29.75 in.
Flight Rule: VFR
Wind Data
10 MPH
230° Southwest
Cloud Level(s): Clear
Current Conditions at
SOUTH BIG HORN - (KGEY)
36°
Mostly Cloudy
as of 1:53 AM MST
Rel. Humidity: 69%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 29.76 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Broken at 11000ft
Current Conditions at
GILLETTE - (KGCC)
48°
Feels like 41°F
Clear
as of 1:53 AM MST
Rel. Humidity: 31%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 29.76 in.
Flight Rule: VFR
Wind Data
18 MPH
220° Southwest
Cloud Level(s): Clear
Mostly Cloudy on Overnight Overnight... Mostly cloudy, with a steady temperature around 34. South wind around 7 mph.

50% chance of rain & snow Wednesday Wednesday... A chance of rain showers before 2pm, then a slight chance of snow showers between 2pm and 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 56. Southwest wind 10 to 20 mph becoming west northwest 34 to 44 mph. Winds could gust as high as 60 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 20. West northwest wind 39 to 44 mph decreasing to 30 to 35 mph after midnight. Winds could gust as high as 60 mph.

Increasing Clouds on Thursday Thursday... Increasing clouds, with a high near 37. Northwest wind 11 to 16 mph becoming west northwest 5 to 10 mph in the afternoon.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a temperature falling to near 27 by 11pm, then rising to around 38 during the remainder of the night. Southeast wind 6 to 11 mph becoming south southwest after midnight.

80% chance of rain & snow Friday Friday... A slight chance of rain before 2pm, then rain, possibly mixed with snow. High near 56. West wind 11 to 16 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

80% chance of rain & snow Friday Night Friday Night... Snow, possibly mixed with rain, becoming all snow after 11pm. Low around 23. North northwest wind 6 to 9 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

30% chance of snow Saturday Saturday... A 30 percent chance of snow, mainly before 11am. Partly sunny, with a high near 39. West northwest wind around 6 mph.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 17. West wind around 5 mph becoming light and variable after midnight.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 40. Light and variable wind.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 22. Light south wind.

Partly Sunny on Monday Monday... Partly sunny, with a high near 49. Light west southwest wind.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 24. Northwest wind around 5 mph becoming calm in the evening.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 44. Light and variable wind.

Current Radar Image


Sun Almanac for Decker, Montana
Sunrise: 07:41 AM
Sunset: 4:27 PM
Civil Sunrise:07:07 AM
Civil Sunset: 5:01 PM
Nautical Sunrise: 06:30 AM
Nautical Sunset: 5:38 PM
Astro Sunrise: 05:54 AM
Astro Sunset: 6:14 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.