ROCK MILLS, ALABAMA

Period of Record General Climate Summary - Growing Degree Days

From Year=1938 To Year=2012
Station:(017025) ROCK MILLS
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 178 217 422 651 909 1091 1209 1188 984 675 365 195 8086
40 S 178 395 817 1468 2378 3468 4678 5866 6850 7525 7890 8086 8086
45 M 97 126 286 502 754 941 1054 1033 834 521 236 107 6492
45 S 97 223 509 1011 1766 2707 3761 4794 5628 6149 6385 6492 6492
50 M 47 63 173 357 600 791 899 878 684 371 132 53 5047
50 S 47 110 283 640 1240 2031 2930 3808 4492 4863 4995 5047 5047
55 M 19 26 89 226 446 641 744 723 534 235 60 22 3766
55 S 19 45 134 360 806 1447 2191 2914 3448 3683 3743 3766 3766
60 M 5 8 38 119 297 491 589 568 386 122 22 7 2652
60 S 5 13 51 169 466 958 1547 2115 2501 2624 2646 2652 2652
Corn Growing Degree Days
50 M 122 154 285 434 598 719 809 795 652 452 257 139 5417
50 S 122 276 561 995 1593 2312 3122 3917 4568 5021 5278 5417 5417
Derived form the 1938-2012 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