ALPHARETTA 5 SSW, GEORGIA

Period of Record General Climate Summary - Cooling Degree Days

From Year=1901 To Year=2011
Station:(090219) ALPHARETTA 5 SSW
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 5 9 49 156 351 552 667 652 461 172 45 12 3130
57 3 5 33 120 293 492 605 590 402 130 30 7 2708
60 1 1 16 74 212 402 512 497 315 79 14 3 2126
65 0 0 3 23 100 257 358 342 182 24 3 0 1292
70 0 0 0 3 27 124 206 191 78 4 0 0 633
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