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Chelsea town, South Dakota

Official LSAD Designation: Chelsea town • Census GEOID: 4611500 • Faulk County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Chelsea town.

Reference Weather Station: MELLETTE 4 W, SD US (ID: USC00395456) • Located 7.9 miles from community center • Elevation: 395.0 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 22.1° 1.4° 11.8° 0.57"
February 27.2° 5.1° 16.2° 0.65"
March 40.0° 17.1° 28.6° 0.90"
April 55.8° 29.2° 42.5° 2.11"
May 68.5° 42.8° 55.7° 3.34"
June 78.5° 54.2° 66.3° 3.47"
July 83.7° 58.9° 71.3° 3.51"
August 81.8° 55.2° 68.5° 2.54"
September 73.8° 45.1° 59.5° 2.35"
October 58.5° 31.7° 45.1° 2.12"
November 41.8° 18.6° 30.2° 0.73"
December 27.7° 7.2° 17.5° 0.67"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station MELLETTE 4 W, SD US (ID: USC00395456) • 7.9 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 MELLETTE 4 W, SD 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 34.5 44.0 53.5 63.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 43.2°F 2011: Annual mean 41.7°F 2012: Annual mean 46.0°F 2014: Annual mean 40.4°F 2015: Annual mean 44.8°F 2016: Annual mean 46.1°F 2010: Annual mean of daily highs 53.8°F 2011: Annual mean of daily highs 53.0°F 2012: Annual mean of daily highs 59.0°F 2014: Annual mean of daily highs 52.4°F 2015: Annual mean of daily highs 57.6°F 2016: Annual mean of daily highs 58.3°F 2010: Annual mean of daily lows 32.6°F 2011: Annual mean of daily lows 30.4°F 2012: Annual mean of daily lows 32.9°F 2014: Annual mean of daily lows 28.4°F 2015: Annual mean of daily lows 32.0°F 2016: Annual mean of daily lows 33.9°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 53.8 32.6
2011 41.7 53.0 30.4
2012 46.0 59.0 32.9
2013 Unavailable Unavailable Unavailable
2014 40.4 52.4 28.4
2015 44.8 57.6 32.0
2016 46.1 58.3 33.9
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.