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Hecla city, South Dakota

Official LSAD Designation: Hecla city • Census GEOID: 4627980 • Brown County

Climate Normals & Weather Observations

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

Reference Weather Station: COLUMBIA 8 N, SD US (ID: USC00391873) • Located 13.2 miles from community center • Elevation: 397.8 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 21.5° 0.4° 10.9° 0.47"
February 26.4° 4.5° 15.4° 0.44"
March 39.3° 17.7° 28.5° 0.87"
April 55.2° 31.1° 43.1° 1.77"
May 68.2° 44.8° 56.5° 3.41"
June 77.8° 55.7° 66.7° 3.59"
July 83.1° 59.9° 71.5° 3.62"
August 81.4° 56.9° 69.2° 2.62"
September 72.9° 46.9° 59.9° 2.38"
October 57.5° 33.0° 45.3° 2.11"
November 40.7° 19.3° 30.0° 0.68"
December 26.9° 7.3° 17.1° 0.50"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station COLUMBIA 8 N, SD US (ID: USC00391873) • 13.2 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 COLUMBIA 8 N, 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. 26.0 34.8 43.5 52.3 61.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 43.5°F 2011: Annual mean 42.5°F 2012: Annual mean 46.0°F 2013: Annual mean 40.5°F 2014: Annual mean 41.0°F 2015: Annual mean 45.1°F 2016: Annual mean 46.2°F 2020: Annual mean 43.2°F 2021: Annual mean 44.9°F 2024: Annual mean 45.4°F 2025: Annual mean 44.0°F 2010: Annual mean of daily highs 53.5°F 2011: Annual mean of daily highs 52.5°F 2012: Annual mean of daily highs 58.1°F 2013: Annual mean of daily highs 51.4°F 2014: Annual mean of daily highs 52.3°F 2015: Annual mean of daily highs 57.1°F 2016: Annual mean of daily highs 57.5°F 2020: Annual mean of daily highs 53.8°F 2021: Annual mean of daily highs 56.2°F 2024: Annual mean of daily highs 55.8°F 2025: Annual mean of daily highs 55.1°F 2010: Annual mean of daily lows 33.5°F 2011: Annual mean of daily lows 32.5°F 2012: Annual mean of daily lows 34.0°F 2013: Annual mean of daily lows 29.5°F 2014: Annual mean of daily lows 29.7°F 2015: Annual mean of daily lows 33.1°F 2016: Annual mean of daily lows 35.0°F 2020: Annual mean of daily lows 32.6°F 2021: Annual mean of daily lows 33.6°F 2024: Annual mean of daily lows 35.0°F 2025: Annual mean of daily lows 32.9°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 43.5 53.5 33.5
2011 42.5 52.5 32.5
2012 46.0 58.1 34.0
2013 40.5 51.4 29.5
2014 41.0 52.3 29.7
2015 45.1 57.1 33.1
2016 46.2 57.5 35.0
2017 Unavailable Unavailable Unavailable
2018 Unavailable Unavailable Unavailable
2019 Unavailable Unavailable Unavailable
2020 43.2 53.8 32.6
2021 44.9 56.2 33.6
2022 Unavailable Unavailable Unavailable
2023 Unavailable Unavailable Unavailable
2024 45.4 55.8 35.0
2025 44.0 55.1 32.9
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.