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Sunnybrook Colony CDP, Montana

Official LSAD Designation: Sunnybrook Colony CDP • Census GEOID: 3072305 • Chouteau County

Climate Normals & Weather Observations

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

Reference Weather Station: RUDYARD 19S, MT US (ID: USC00247247) • Located 10.1 miles from community center • Elevation: 877.2 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 26.1° 3.8° 14.9° 0.42"
February 31.3° 6.9° 19.1° 0.32"
March 42.2° 16.0° 29.1° 0.43"
April 54.1° 26.7° 40.4° 1.15"
May 63.4° 36.4° 49.9° 1.77"
June 71.7° 45.4° 58.6° 2.57"
July 82.4° 51.6° 67.0° 1.24"
August 80.8° 49.4° 65.1° 1.15"
September 69.5° 40.0° 54.8° 1.11"
October 54.5° 28.0° 41.2° 0.83"
November 40.2° 16.9° 28.6° 0.53"
December 30.2° 7.5° 18.8° 0.38"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station RUDYARD 19S, MT US (ID: USC00247247) • 10.1 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 RUDYARD 19S, 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. 20.0 30.8 41.5 52.3 63.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2012: Annual mean 45.1°F 2015: Annual mean 44.4°F 2018: Annual mean 39.0°F 2019: Annual mean 37.6°F 2020: Annual mean 42.6°F 2011: Annual mean of daily highs 54.9°F 2012: Annual mean of daily highs 59.3°F 2015: Annual mean of daily highs 58.3°F 2018: Annual mean of daily highs 52.4°F 2019: Annual mean of daily highs 50.8°F 2020: Annual mean of daily highs 57.0°F 2012: Annual mean of daily lows 30.8°F 2015: Annual mean of daily lows 30.5°F 2018: Annual mean of daily lows 25.6°F 2019: Annual mean of daily lows 24.4°F 2020: Annual mean of daily lows 28.2°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 Unavailable Unavailable Unavailable
2011 Unavailable 54.9 Unavailable
2012 45.1 59.3 30.8
2013 Unavailable Unavailable Unavailable
2014 Unavailable Unavailable Unavailable
2015 44.4 58.3 30.5
2016 Unavailable Unavailable Unavailable
2017 Unavailable Unavailable Unavailable
2018 39.0 52.4 25.6
2019 37.6 50.8 24.4
2020 42.6 57.0 28.2
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.