ORRVILLE, ALABAMA

Period of Record General Climate Summary - Cooling Degree Days

From Year=1891 To Year=1973
Station:(016161) ORRVILLE
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 -99 -99 -99 -99 -99 -99 738 -99 603 222 80 32 -99
57 -99 -99 -99 -99 -99 -99 676 -99 543 173 53 16 -99
60 -99 -99 -99 -99 -99 -99 583 -99 453 121 23 1 -99
65 -99 -99 -99 -99 -99 -99 428 -99 303 63 2 0 -99
70 -99 -99 -99 -99 -99 -99 273 -99 161 31 0 0 -99
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