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Harmon CDP, North Dakota

Official LSAD Designation: Harmon CDP • Census GEOID: 3835500 • Morton County

Climate Normals & Weather Observations

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

Reference Weather Station: MANDAN EXP STN, ND US (ID: USC00325479) • Located 10.0 miles from community center • Elevation: 533.4 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 22.5° 2.7° 12.6° 0.38"
February 27.1° 6.4° 16.7° 0.40"
March 39.6° 18.3° 29.0° 0.59"
April 54.1° 30.4° 42.3° 1.27"
May 66.5° 42.6° 54.5° 2.59"
June 76.0° 53.0° 64.5° 3.44"
July 82.6° 58.0° 70.3° 3.24"
August 81.8° 55.5° 68.7° 2.19"
September 72.1° 45.8° 59.0° 1.64"
October 56.1° 32.1° 44.1° 1.47"
November 39.9° 19.1° 29.5° 0.63"
December 27.4° 8.4° 17.9° 0.52"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station MANDAN EXP STN, ND US (ID: USC00325479) • 10.0 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 MANDAN EXP STN, ND 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. 25.0 33.8 42.5 51.3 60.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2011: Annual mean 41.6°F 2015: Annual mean 44.5°F 2019: Annual mean 38.6°F 2024: Annual mean 44.2°F 2011: Annual mean of daily highs 53.0°F 2015: Annual mean of daily highs 56.3°F 2019: Annual mean of daily highs 48.6°F 2024: Annual mean of daily highs 55.7°F 2011: Annual mean of daily lows 30.1°F 2015: Annual mean of daily lows 32.8°F 2019: Annual mean of daily lows 28.7°F 2024: Annual mean of daily lows 32.8°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 41.6 53.0 30.1
2012 Unavailable Unavailable Unavailable
2013 Unavailable Unavailable Unavailable
2014 Unavailable Unavailable Unavailable
2015 44.5 56.3 32.8
2016 Unavailable Unavailable Unavailable
2017 Unavailable Unavailable Unavailable
2018 Unavailable Unavailable Unavailable
2019 38.6 48.6 28.7
2020 Unavailable Unavailable Unavailable
2021 Unavailable Unavailable Unavailable
2022 Unavailable Unavailable Unavailable
2023 Unavailable Unavailable Unavailable
2024 44.2 55.7 32.8
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.