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Isle of Palms city, South Carolina

Official LSAD Designation: Isle of Palms city • Census GEOID: 4536115 • Charleston County

Climate Normals & Weather Observations

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

Reference Weather Station: SULLIVANS IS, SC US (ID: USC00388405) • Located 6.8 miles from community center • Elevation: 1.5 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 59.2° 36.5° 47.8° 3.81"
February 61.4° 39.0° 50.2° 3.30"
March 67.1° 44.7° 55.9° 3.49"
April 74.8° 53.5° 64.1° 3.59"
May 82.2° 63.2° 72.7° 3.33"
June 87.9° 69.9° 78.9° 5.36"
July 91.1° 73.0° 82.0° 5.97"
August 90.0° 72.0° 81.0° 6.72"
September 85.9° 67.7° 76.8° 5.47"
October 78.3° 57.5° 67.9° 3.94"
November 69.2° 47.0° 58.1° 3.00"
December 62.1° 39.8° 51.0° 3.62"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station SULLIVANS IS, SC US (ID: USC00388405) • 6.8 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 SULLIVANS IS, 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. 53.0 59.8 66.5 73.3 80.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 65.3°F 2011: Annual mean 68.0°F 2023: Annual mean 67.8°F 2024: Annual mean 67.3°F 2010: Annual mean of daily highs 75.3°F 2011: Annual mean of daily highs 76.7°F 2012: Annual mean of daily highs 77.3°F 2014: Annual mean of daily highs 74.9°F 2023: Annual mean of daily highs 74.4°F 2024: Annual mean of daily highs 73.4°F 2010: Annual mean of daily lows 55.3°F 2011: Annual mean of daily lows 59.3°F 2023: Annual mean of daily lows 61.2°F 2024: Annual mean of daily lows 61.3°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 65.3 75.3 55.3
2011 68.0 76.7 59.3
2012 Unavailable 77.3 Unavailable
2013 Unavailable Unavailable Unavailable
2014 Unavailable 74.9 Unavailable
2015 Unavailable Unavailable Unavailable
2016 Unavailable Unavailable Unavailable
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 67.8 74.4 61.2
2024 67.3 73.4 61.3
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.