ANNISTON FAA AIRPORT, ALABAMA

Period of Record General Climate Summary - Growing Degree Days

From Year=1903 To Year=2012
Station:(010272) ANNISTON FAA AIRPORT
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 181 226 446 662 921 1103 1233 1213 1009 700 383 211 8288
40 S 181 407 853 1515 2436 3539 4772 5985 6994 7694 8077 8288 8288
45 M 99 134 307 513 766 953 1078 1058 859 546 256 119 6688
45 S 99 233 540 1053 1819 2773 3851 4908 5767 6313 6568 6688 6688
50 M 49 69 190 369 611 803 923 903 709 395 152 61 5233
50 S 49 117 308 677 1288 2091 3014 3917 4625 5020 5172 5233 5233
55 M 20 30 103 238 457 653 768 748 559 256 76 27 3935
55 S 20 50 153 391 847 1501 2269 3016 3575 3831 3907 3935 3935
60 M 6 10 45 130 308 503 613 593 410 142 30 9 2799
60 S 6 15 61 191 499 1002 1615 2208 2618 2760 2789 2799 2799
Corn Growing Degree Days
50 M 108 143 276 422 608 749 845 830 679 452 246 132 5489
50 S 108 251 527 949 1557 2306 3151 3981 4660 5112 5357 5489 5489
Derived form the 1903-2012 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