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Grant CDP, Montana

Official LSAD Designation: Grant CDP • Census GEOID: 3032350 • Beaverhead County

Climate Normals & Weather Observations

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

Reference Weather Station: DILLON 18 WSW, MT US (ID: USW00004137) • Located 10.7 miles from community center • Elevation: 1,820.0 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 28.1° 7.8° 18.0° 0.34"
February 31.9° 9.0° 20.4° 0.56"
March 40.7° 18.1° 29.4° 0.56"
April 50.2° 25.5° 37.9° 1.00"
May 60.4° 33.2° 46.8° 1.59"
June 68.9° 39.1° 54.0° 1.84"
July 80.9° 44.0° 62.4° 0.62"
August 79.2° 42.0° 60.6° 0.69"
September 68.8° 34.7° 51.8° 0.85"
October 53.4° 25.3° 39.4° 0.86"
November 38.5° 14.6° 26.5° 0.47"
December 28.4° 6.5° 17.5° 0.71"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station DILLON 18 WSW, MT US (ID: USW00004137) • 10.7 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 DILLON 18 WSW, 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. 18.0 28.5 39.0 49.5 60.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 37.5°F 2011: Annual mean 37.8°F 2012: Annual mean 40.5°F 2014: Annual mean 39.4°F 2015: Annual mean 41.6°F 2016: Annual mean 39.8°F 2017: Annual mean 38.8°F 2018: Annual mean 39.1°F 2019: Annual mean 35.8°F 2020: Annual mean 39.0°F 2021: Annual mean 40.3°F 2022: Annual mean 37.9°F 2023: Annual mean 37.7°F 2025: Annual mean 41.4°F 2010: Annual mean of daily highs 51.2°F 2011: Annual mean of daily highs 51.8°F 2012: Annual mean of daily highs 55.5°F 2014: Annual mean of daily highs 53.2°F 2015: Annual mean of daily highs 55.7°F 2016: Annual mean of daily highs 53.9°F 2017: Annual mean of daily highs 52.5°F 2018: Annual mean of daily highs 53.2°F 2019: Annual mean of daily highs 49.6°F 2020: Annual mean of daily highs 53.8°F 2021: Annual mean of daily highs 55.4°F 2022: Annual mean of daily highs 52.6°F 2023: Annual mean of daily highs 51.5°F 2025: Annual mean of daily highs 56.3°F 2010: Annual mean of daily lows 23.8°F 2011: Annual mean of daily lows 23.8°F 2012: Annual mean of daily lows 25.4°F 2014: Annual mean of daily lows 25.6°F 2015: Annual mean of daily lows 27.4°F 2016: Annual mean of daily lows 25.7°F 2017: Annual mean of daily lows 25.0°F 2018: Annual mean of daily lows 24.9°F 2019: Annual mean of daily lows 22.0°F 2020: Annual mean of daily lows 24.2°F 2021: Annual mean of daily lows 25.2°F 2022: Annual mean of daily lows 23.2°F 2023: Annual mean of daily lows 23.8°F 2025: Annual mean of daily lows 26.5°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 37.5 51.2 23.8
2011 37.8 51.8 23.8
2012 40.5 55.5 25.4
2013 Unavailable Unavailable Unavailable
2014 39.4 53.2 25.6
2015 41.6 55.7 27.4
2016 39.8 53.9 25.7
2017 38.8 52.5 25.0
2018 39.1 53.2 24.9
2019 35.8 49.6 22.0
2020 39.0 53.8 24.2
2021 40.3 55.4 25.2
2022 37.9 52.6 23.2
2023 37.7 51.5 23.8
2024 Unavailable Unavailable Unavailable
2025 41.4 56.3 26.5
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.