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Fort Smith CDP, Montana

Official LSAD Designation: Fort Smith CDP • Census GEOID: 3028650 • Big Horn County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Fort Smith CDP.

Reference Weather Station: YELLOWTAIL DAM, MT US (ID: USC00249240) • Located 0.2 miles from community center • Elevation: 1,007.4 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 38.5° 19.6° 29.0° 0.72"
February 40.0° 21.0° 30.5° 0.83"
March 50.3° 27.9° 39.1° 1.21"
April 57.9° 35.6° 46.8° 1.95"
May 67.9° 44.0° 55.9° 2.62"
June 78.4° 52.7° 65.6° 2.27"
July 88.8° 59.2° 74.0° 1.15"
August 87.4° 57.3° 72.3° 0.78"
September 76.1° 48.6° 62.3° 1.67"
October 60.5° 38.0° 49.3° 1.98"
November 47.5° 28.2° 37.8° 0.77"
December 39.4° 21.3° 30.3° 0.72"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station YELLOWTAIL DAM, MT US (ID: USC00249240) • 0.2 miles from community center .

This is the same reference station used for monthly normals.

Annual mean Annual mean of daily highs Annual mean of daily lows
Annual temperature history at YELLOWTAIL DAM, MT US Year is the horizontal axis. Annual mean temperature in degrees Fahrenheit is the vertical axis. Dots show recorded years; lines connect consecutive available years only. Missing years are gaps, with no interpolation. Optional dashed lines show annual mean of daily highs and lows. Exact values appear in the data table below. 34.0 41.3 48.5 55.8 63.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 47.9°F 2011: Annual mean 49.1°F 2014: Annual mean 48.3°F 2010: Annual mean of daily highs 59.5°F 2011: Annual mean of daily highs 60.3°F 2014: Annual mean of daily highs 59.7°F 2010: Annual mean of daily lows 36.4°F 2011: Annual mean of daily lows 37.9°F 2014: Annual mean of daily lows 36.9°F

Source: NOAA NCEI Global Summary of the Year.

Annual temperature data table (°F)
Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year Annual mean (°F) Annual mean of daily highs (°F) Annual mean of daily lows (°F)
2010 47.9 59.5 36.4
2011 49.1 60.3 37.9
2012 Unavailable Unavailable Unavailable
2013 Unavailable Unavailable Unavailable
2014 48.3 59.7 36.9
2015 Unavailable Unavailable Unavailable
2016 Unavailable Unavailable Unavailable
2017 Unavailable Unavailable Unavailable
2018 Unavailable Unavailable Unavailable
2019 Unavailable Unavailable Unavailable
2020 Unavailable Unavailable Unavailable
2021 Unavailable Unavailable Unavailable
2022 Unavailable Unavailable Unavailable
2023 Unavailable Unavailable Unavailable
2024 Unavailable Unavailable Unavailable
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.