Weather & Climate at Joint Base Charleston

Charleston, SC

Summary of the weather and climate in Charleston, SC:

The average high is 76.1°F and the average low is 55.5°F.
The hottest month is July with a high of 91.1°F.
The coldest month is January with a low of 37.5°F.
Annual rainfall is 51.03 inches; the rainiest month is August (7.15 in).
Annual snowfall is 0.5 inches; the snowiest month is December (0.3 in).

Source: NOAA climate normals.

Temperatures through the year

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Bars span each month's average low to average high (30°F – 100°F scale).

Month	High (°F)	Low (°F)	Rain (in)	Snow (in)
January	59	37.5	3.71	0
February	62.8	40.6	2.96	0.2
March	69.6	46.7	3.71	0
April	76.4	53.3	2.91	0
May	83.2	61.8	3.02	0
June	88.4	69.6	5.65	0
July	91.1	73	6.53	0
August	89.5	72.3	7.15	0
September	84.8	67.2	6.1	0
October	77.1	56.8	3.75	0
November	69.8	47.5	2.43	0
December	61.6	40.1	3.11	0.3