CHATOM, ALABAMA

Period of Record General Climate Summary - Heating Degree Days

From Year=1949 To Year=2012
Station:(011566) CHATOM
Averages Daily Extremes
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 531 384 245 79 10 0 0 0 4 79 286 471 2091
60 393 265 144 30 2 0 0 0 1 30 177 334 1375
57 316 204 97 14 0 0 0 0 0 14 124 261 1031
55 268 167 72 8 0 0 0 0 0 8 95 216 834
50 163 91 30 2 0 0 0 0 0 2 41 121 450
Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. 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