CHATOM, ALABAMA

Period of Record General Climate Summary - Cooling Degree Days

From Year=1949 To Year=2012
Station:(011566) CHATOM
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 54 74 172 324 547 701 791 775 621 345 130 64 4599
57 40 54 135 270 485 641 729 713 561 290 99 47 4065
60 23 32 88 196 394 551 636 620 472 212 62 27 3314
65 7 9 35 95 247 401 481 465 326 107 21 9 2203
70 1 2 9 31 119 254 326 311 188 38 4 2 1284
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