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Sidney city, Montana

Official LSAD Designation: Sidney city • Census GEOID: 3067900 • Richland County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Sidney city.

Reference Weather Station: SIDNEY, MT US (ID: USC00247560) • Located 1.3 miles from community center • Elevation: 589.2 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 27.2° 6.5° 16.9° 0.45"
February 32.0° 10.6° 21.3° 0.37"
March 45.8° 21.0° 33.4° 0.58"
April 60.5° 31.8° 46.1° 1.17"
May 71.3° 42.7° 57.0° 2.40"
June 79.1° 52.3° 65.7° 2.78"
July 86.6° 57.3° 72.0° 2.65"
August 86.4° 55.1° 70.8° 1.30"
September 75.8° 45.5° 60.6° 1.62"
October 59.4° 33.6° 46.5° 1.08"
November 41.9° 21.2° 31.6° 0.59"
December 30.6° 10.7° 20.6° 0.51"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station SIDNEY, MT US (ID: USC00247560) • 1.3 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 SIDNEY, 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. 26.0 36.8 47.5 58.3 69.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 43.2°F 2011: Annual mean 44.1°F 2012: Annual mean 45.9°F 2013: Annual mean 43.1°F 2019: Annual mean 42.1°F 2020: Annual mean 46.0°F 2024: Annual mean 52.7°F 2010: Annual mean of daily highs 55.0°F 2011: Annual mean of daily highs 56.2°F 2012: Annual mean of daily highs 59.4°F 2013: Annual mean of daily highs 54.6°F 2019: Annual mean of daily highs 54.2°F 2020: Annual mean of daily highs 60.1°F 2024: Annual mean of daily highs 65.4°F 2010: Annual mean of daily lows 31.4°F 2011: Annual mean of daily lows 32.1°F 2012: Annual mean of daily lows 32.5°F 2013: Annual mean of daily lows 31.7°F 2019: Annual mean of daily lows 30.1°F 2020: Annual mean of daily lows 32.0°F 2024: Annual mean of daily lows 39.9°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 43.2 55.0 31.4
2011 44.1 56.2 32.1
2012 45.9 59.4 32.5
2013 43.1 54.6 31.7
2014 Unavailable Unavailable Unavailable
2015 Unavailable Unavailable Unavailable
2016 Unavailable Unavailable Unavailable
2017 Unavailable Unavailable Unavailable
2018 Unavailable Unavailable Unavailable
2019 42.1 54.2 30.1
2020 46.0 60.1 32.0
2021 Unavailable Unavailable Unavailable
2022 Unavailable Unavailable Unavailable
2023 Unavailable Unavailable Unavailable
2024 52.7 65.4 39.9
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.