GORGAS, ALABAMA

Period of Record General Climate Summary - Growing Degree Days

From Year=1937 To Year=1994
Station:(013430) GORGAS
Averages Daily Extremes
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 244 277 -99 579 914 -99 1246 1315 -99 -99 -99 477 -99
40 S 244 520 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
45 M 144 175 -99 429 759 -99 1091 1160 -99 -99 -99 333 -99
45 S 144 319 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
50 M 78 101 -99 291 604 -99 936 1005 -99 -99 -99 213 -99
50 S 78 179 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
55 M 35 49 -99 180 449 -99 781 850 -99 -99 -99 108 -99
55 S 35 83 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
60 M 11 20 -99 92 298 -99 626 695 -99 -99 -99 41 -99
60 S 11 31 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
Corn Growing Degree Days
50 M 151 155 -99 381 585 -99 863 892 -99 -99 -99 259 -99
50 S 151 306 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
Derived form the 1937-1994 Data
M = Monthly Data
S - Running sum of monthly data.
Growing 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.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
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