DEMOPOLIS LOCK AND DAM, ALABAMA

Period of Record General Climate Summary - Growing Degree Days

From Year=1951 To Year=2012
Station:(012245) DEMOPOLIS LOCK AND DAM
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 199 255 481 697 957 1128 1253 1238 1040 725 423 254 8652
40 S 199 455 936 1633 2590 3719 4971 6210 7249 7974 8398 8652 8652
45 M 114 158 342 548 802 978 1098 1083 890 571 292 155 7029
45 S 114 272 613 1161 1963 2942 4039 5123 6012 6583 6875 7029 7029
50 M 58 87 220 401 647 828 943 928 740 419 181 87 5540
50 S 58 145 366 767 1414 2242 3185 4113 4853 5272 5453 5540 5540
55 M 26 41 126 265 493 678 788 773 590 278 97 43 4199
55 S 26 67 193 458 951 1629 2417 3190 3780 4058 4155 4199 4199
60 M 9 15 59 151 341 528 633 618 441 161 42 17 3016
60 S 9 24 83 234 575 1104 1736 2355 2796 2957 2999 3016 3016
Corn Growing Degree Days
50 M 128 165 302 447 636 764 851 840 700 472 277 164 5746
50 S 128 293 595 1042 1679 2443 3294 4134 4834 5306 5583 5746 5746
Derived form the 1951-2012 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