Weather By Day

May Charleston Weather 
May Charleston Weather
Record High: 93°F
Normal High: 75°F
Normal Low: 50°F
Record Low: 26°F
Avg Monthly Rain: 4.3"
Rec 1 Day Rain: 2.26"

Charleston Weather In May

The highest recorded temperature for Charleston for the past 63 years in May was 93 degrees Fahrenheit, most recently measured on May 31, 2006, while the standard high temperature is 75. In the last 63 years the lowest measured May temperature in Charleston was 26 measured on May 31, 1966, and the typical low is 50.

According to National Weather Service historical Charleston May Weather data, on May 13, 1960, the high temperature did not exceed 47 degrees Fahrenheit, the lowest high measured in Charleston in the past 63 years. Weather Service data also shows that on May 26, 1953, the lowest recorded temperature for the day did not drop below 74 degrees, the highest low measured temperature in Charleston in the last 63 years.

According to the National Weather Service, the high temperature in Charleston in May on the first day of the month averages 74 degrees and the high on the last day of the month averages 80 degrees. The low temperature in Charleston in May on the first day of the month averages 49 degrees and the low temperature on the last day of the month averages 56 degrees.

Charleston usually receives an average of 4.3 inches of precipitation during the month. According to May Charleston Weather records, the most rain measured in a single day in May was 2.26 inches on May 7, 1994.