CLAYTON, ALABAMA

Period of Record General Climate Summary - Growing Degree Days

From Year=1928 To Year=2012
Station:(011725) CLAYTON
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 247 285 530 744 982 1124 1227 1215 1056 782 507 322 9021
40 S 247 532 1062 1806 2788 3912 5139 6355 7410 8192 8699 9021 9021
45 M 148 183 386 595 827 974 1072 1060 906 627 368 203 7350
45 S 148 331 717 1312 2139 3113 4186 5246 6152 6779 7146 7350 7350
50 M 76 104 256 447 672 824 917 905 756 473 245 115 5790
50 S 76 179 436 882 1555 2379 3296 4202 4957 5431 5675 5790 5790
55 M 33 50 150 306 517 674 762 750 606 325 142 56 4370
55 S 33 82 232 538 1055 1730 2492 3242 3848 4173 4314 4370 4370
60 M 10 19 72 182 364 524 607 595 456 193 66 22 3110
60 S 10 30 101 283 647 1171 1779 2374 2831 3023 3089 3110 3110
Corn Growing Degree Days
50 M 143 173 323 476 660 775 851 842 719 498 310 192 5962
50 S 143 316 638 1115 1775 2550 3401 4242 4962 5460 5770 5962 5962
Derived form the 1928-2012 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