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Forty Mile Colony, Montana Weather Forecast
Forty Mile Colony, Montana Weather
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Click for High Wind Warning for Forty Mile Colony, Montana
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Weather Forecast for Forty Mile Colony, Montana : Big Horn County
Issued: 4:09 am MST Dec 17, 2025 Latitude: 45.2699663 Longitude: -107.3506475 View on Google Maps

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Today Tonight Thursday Friday Saturday Sunday Monday Tuesday
70% chance of rain & snow on Today 20% chance of snow on Tonight Partly Sunny on Thursday 80% chance of rain & snow on Friday 40% chance of snow on Saturday Partly Sunny on Sunday Partly Sunny on Monday Partly Sunny on Tuesday
High: 56 °F Low: 22°F High: 40°F High: 58°F High: 41°F High: 42°F High: 50°F High: 46°F
Low: 32 °F Low: 25°F Low: 22°F Low: 27°F Low: 28°F  
Rain & Snow Snow Partly Sunny Rain & Snow Snow Partly Sunny Partly Sunny Partly Sunny
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Current Conditions at
SHERIDAN - (KSHR)
50°
Clear
as of 5:53 AM MST
Rel. Humidity: 31%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 29.48 in.
Flight Rule: VFR
Wind Data
7 MPH
160° South
Cloud Level(s): Clear
Current Conditions at
SOUTH BIG HORN - (KGEY)
43°
Clear
as of 5:53 AM MST
Rel. Humidity: 48%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.60 in.
Flight Rule: VFR
Wind Data
8 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
BILLINGS - (KBIL)
50°
Feels like 44°F
Mostly Cloudy
as of 5:53 AM MST
Rel. Humidity: 43%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 29.41 in.
Flight Rule: VFR
Wind Data
17 MPH
Gust: 30 MPH
240° Southwest
Cloud Level(s): Few at 10000ft, Broken at 20000ft
Current Conditions at
BUFFALO - (KBYG)
46°
Feels like 40°F
Clear
as of 5:53 AM MST
Rel. Humidity: 39%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 29.55 in.
Flight Rule: VFR
Wind Data
15 MPH
Gust: 26 MPH
160° South
Cloud Level(s): Clear
70% chance of rain & snow Today Today... Rain showers likely before 2pm, then a slight chance of snow showers between 2pm and 3pm. Cloudy through mid morning, then gradual clearing, with a temperature rising to near 56 by 10am, then falling to around 39 during the remainder of the day. Southeast wind 15 to 25 mph becoming west northwest 33 to 43 mph. Winds could gust as high as 60 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
20% chance of snow Tonight Tonight... A slight chance of snow showers between 1am and 2am. Partly cloudy, with a low around 22. West northwest wind 38 to 43 mph decreasing to 25 to 30 mph after midnight. Winds could gust as high as 60 mph. Chance of precipitation is 20%.
Partly Sunny on Thursday Thursday... Partly sunny, with a high near 40. West northwest wind 6 to 11 mph becoming south southeast in the afternoon.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a temperature falling to near 32 by 9pm, then rising to around 46 during the remainder of the night. Southeast wind 9 to 18 mph becoming south southwest after midnight.
80% chance of rain & snow Friday Friday... A chance of rain before 2pm, then rain, possibly mixed with snow. High near 58. West southwest wind 15 to 23 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
90% chance of rain & snow Friday Night Friday Night... Rain and snow, becoming all snow after 8pm. Low around 25. Northwest wind 6 to 10 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
40% chance of snow Saturday Saturday... A 40 percent chance of snow, mainly before 11am. Partly sunny, with a high near 41. West northwest wind 6 to 8 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. West southwest wind 6 to 8 mph becoming south after midnight.
Partly Sunny on Sunday Sunday... Partly sunny, with a high near 42. Southeast wind around 6 mph.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 27. South southeast wind around 6 mph.
Partly Sunny on Monday Monday... Partly sunny, with a high near 50. South wind around 7 mph.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 28. South southwest wind around 7 mph.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 46. Southeast wind around 6 mph.
Current Radar Image


Sun Almanac for Forty Mile Colony, Montana
Sunrise: 07:44 AM
Sunset: 4:28 PM
Civil Sunrise:07:10 AM
Civil Sunset: 5:02 PM
Nautical Sunrise: 06:32 AM
Nautical Sunset: 5:39 PM
Astro Sunrise: 05:56 AM
Astro Sunset: 6:15 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.