Charleston Weather In May
In the last 68 years the highest measured May temperature in Charleston was 93 degrees Fahrenheit, most recently measured on May 31, 2006, and the mean high is 83. The record low May temperature in Charleston for the last 68 years was 26 on May 31, 1966, while the mean low daily temperature during the month is 61.
United States National Weather Service historical Charleston May weather data indicates that on May 13, 1960, the measured high temperature did not exceed 47 degrees Fahrenheit, the lowest high measured in Charleston in the past 68 years. The Weather Service additionally indicates that on May 26, 1953, the low for the day did not drop below 74 degrees, the highest low recorded in Charleston in the last 68 years.
National Weather Service data shows that the high temperature in Charleston on May First averages 74 degrees Fahrenheit and the high on the final day of May averages 80 degrees. The low measured temperature in Charleston on May First averages 49 degrees and the low on the last day of the month averages 56 degrees.
Charleston usually receives an average of 3.67 inches of precipitation during May. May Charleston Weather records indicate that on May 7, 1994 Charleston received 2.26 inches of precipitation, the highest amount of rain recorded in a single day in May.