Charleston Airport

The tables below display average monthly climate and weather indicators in Charleston Airport South Carolina. Temperature by: Fahrenheit / Centigrade Charleston Airport Temperature Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Avg. Temperature 47.8 50.5 58.1 64.9 72.8 78.3 81.5 80.6 76.4 66.8 58.4 51.2 65.6 Avg. Max Temperature 57.8 61.0 68.6 75.8 82.7 87.6 90.2 89.0 84.9 77.2 69.5 61.6 75.5 Avg. Min Temperature 37.7 40.0 47.5 53.9 62.9 69.1 72.7 72.2 67.9 56.3 47.2 40.7 55.7 Days with Max Temp of 90 F or Higher 0.0 0.0 < 0.5 1.0 4.0 11.0 17.0 14.0 5.0 < 0.5 0.0 0.0 53.0 Days with Min Temp Below Freezing 11.0 7.0 3.0 < 0.5 0.0 0.0 0.0 0.0 0.0 < 0.5 3.0 9.0 32.0     Charleston Airport Heating and Cooling Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Heating Degree Days 548 414 239 66.0 0.0 0.0 0.0 0.0 0.0 74.0 233 439 2013 Cooling Degree Days 15.0 8.0 25.0 63.0 242 399 512 484 342 130 35.0 11.0 2266     Charleston Airport Precipitation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Precipitation (inches) 3.5 3.3 4.3 2.7 4.0 6.4 6.8 7.2 4.7 2.9 2.5 3.1 51.5 Days with Precipitation 0.01 inch or More 10.0 9.0 10.0 7.0 9.0 11.0 14.0 13.0 10.0 6.0 7.0 9.0 114 Monthly Snowfall (inches) 0.1 0.2 0.1 < 0.05 0.0 < 0.05 < 0.05 0.0 0.0 0.0 < 0.05 0.3 0.7     Other Charleston Airport Weather Indicators Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Average Wind Speed 9.1 9.8 10.0 9.7 8.6 8.3 7.8 7.4 7.7 8.0 8.1 8.5 8.6 Clear Days 9.0 9.0 9.0 11.0 8.0 6.0 5.0 6.0 7.0 11.0 12.0 9.0 102 Partly Cloudy Days 6.0 6.0 8.0 8.0 11.0 11.0 12.0 13.0 10.0 8.0 7.0 7.0 109 Cloudy Days 16.0 13.0 14.0 11.0 12.0 13.0 13.0 13.0 13.0 11.0 12.0 14.0 155 Percent of Possible Sunshine 56.0 59.0 66.0 72.0 68.0 66.0 67.0 64.0 61.0 63.0 59.0 56.0 63.0 Avg. Relative Humidity 69.5 69.0 67.5 67.0 67.0 69.5 73.5 76.0 76.5 75.5 71.0 68.5 70.5

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