DECATUR, ALABAMA

Period of Record General Climate Summary - Heating Degree Days

From Year=1880 To Year=1969
Station:(012207) DECATUR
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
65 707 588 404 159 33 1 0 0 12 141 419 666 3130
60 557 453 278 85 10 0 0 0 3 69 288 516 2259
57 471 376 213 54 4 0 0 0 1 42 219 430 1810
55 416 328 174 38 2 0 0 0 1 28 179 375 1541
50 289 218 97 13 0 0 0 0 0 9 97 250 973
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