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Union city, South Carolina

Official LSAD Designation: Union city • Census GEOID: 4573105 • Union County

Climate Normals & Weather Observations

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

Reference Weather Station: UNION 8 S, SC US (ID: USC00388786) • Located 8.4 miles from community center • Elevation: 146.3 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 52.9° 29.0° 41.0° 4.19"
February 57.3° 32.1° 44.7° 3.61"
March 64.6° 37.6° 51.1° 4.29"
April 74.0° 46.5° 60.3° 3.75"
May 80.6° 55.4° 68.0° 3.13"
June 87.1° 64.6° 75.8° 4.09"
July 90.4° 68.3° 79.3° 3.67"
August 88.7° 67.3° 78.0° 3.99"
September 83.2° 61.1° 72.1° 3.37"
October 73.7° 47.8° 60.7° 3.33"
November 63.4° 37.0° 50.2° 3.56"
December 55.4° 31.7° 43.5° 4.27"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station UNION 8 S, SC US (ID: USC00388786) • 8.4 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 UNION 8 S, SC 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. 44.0 52.5 61.0 69.5 78.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2014: Annual mean 59.8°F 2015: Annual mean 61.6°F 2016: Annual mean 62.1°F 2017: Annual mean 62.0°F 2018: Annual mean 61.2°F 2019: Annual mean 62.0°F 2020: Annual mean 61.3°F 2021: Annual mean 60.0°F 2022: Annual mean 60.1°F 2023: Annual mean 60.6°F 2024: Annual mean 60.7°F 2025: Annual mean 59.7°F 2014: Annual mean of daily highs 72.3°F 2015: Annual mean of daily highs 73.4°F 2016: Annual mean of daily highs 74.8°F 2017: Annual mean of daily highs 74.4°F 2018: Annual mean of daily highs 72.5°F 2019: Annual mean of daily highs 73.8°F 2020: Annual mean of daily highs 72.4°F 2021: Annual mean of daily highs 72.3°F 2022: Annual mean of daily highs 72.5°F 2023: Annual mean of daily highs 73.1°F 2024: Annual mean of daily highs 73.0°F 2025: Annual mean of daily highs 72.4°F 2014: Annual mean of daily lows 47.3°F 2015: Annual mean of daily lows 49.7°F 2016: Annual mean of daily lows 49.3°F 2017: Annual mean of daily lows 49.6°F 2018: Annual mean of daily lows 49.9°F 2019: Annual mean of daily lows 50.1°F 2020: Annual mean of daily lows 50.1°F 2021: Annual mean of daily lows 47.7°F 2022: Annual mean of daily lows 47.6°F 2023: Annual mean of daily lows 48.1°F 2024: Annual mean of daily lows 48.4°F 2025: Annual mean of daily lows 47.0°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 Unavailable Unavailable
2012 Unavailable Unavailable Unavailable
2013 Unavailable Unavailable Unavailable
2014 59.8 72.3 47.3
2015 61.6 73.4 49.7
2016 62.1 74.8 49.3
2017 62.0 74.4 49.6
2018 61.2 72.5 49.9
2019 62.0 73.8 50.1
2020 61.3 72.4 50.1
2021 60.0 72.3 47.7
2022 60.1 72.5 47.6
2023 60.6 73.1 48.1
2024 60.7 73.0 48.4
2025 59.7 72.4 47.0
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.