JOHNSTON 4 SW, SOUTH CAROLINA

Period of Record General Climate Summary - Cooling Degree Days

From Year=1957 To Year=2012
Station:(384607) JOHNSTON 4 SW
Averages Daily Extremes
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 13 23 85 220 443 639 761 726 532 238 82 24 3787
57 8 15 61 177 383 580 699 664 472 190 59 16 3323
60 3 6 34 120 296 490 606 571 384 127 33 8 2678
65 0 1 9 50 167 341 451 416 245 52 10 1 1743
70 0 0 1 12 69 199 297 263 125 14 2 0 981
Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Table updated on May 22,
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Southeast Regional Climate Center, SERCC Webmaster