ALEXANDER CITY, ALABAMA

Period of Record General Climate Summary - Growing Degree Days

From Year=1969 To Year=2012
Station:(010160) ALEXANDER CITY
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 170 224 463 658 914 1105 1236 1212 1015 706 410 227 8339
40 S 170 394 857 1514 2428 3533 4769 5981 6996 7702 8112 8339 8339
45 M 89 132 322 509 759 955 1081 1057 865 552 277 129 6727
45 S 89 221 544 1053 1811 2766 3847 4904 5769 6321 6598 6727 6727
50 M 40 68 200 364 604 805 926 902 715 399 166 68 5256
50 S 40 107 308 672 1276 2080 3006 3908 4624 5023 5188 5256 5256
55 M 14 28 106 233 450 655 771 747 565 257 83 30 3940
55 S 14 42 148 381 831 1486 2257 3004 3569 3826 3909 3940 3940
60 M 4 8 43 125 300 505 616 592 417 141 33 10 2793
60 S 4 12 55 180 480 984 1600 2192 2610 2750 2783 2793 2793
Corn Growing Degree Days
50 M 111 155 296 425 604 749 841 829 684 459 270 151 5574
50 S 111 266 562 987 1591 2340 3181 4010 4693 5152 5422 5574 5574
Derived form the 1969-2012 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