JACKSONVILLE WSO AP, FLORIDA

Period of Record General Climate Summary - Growing Degree Days

From Year=1948 To Year=2012
Station:(084358) JACKSONVILLE WSO AP
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 435 466 683 836 1077 1200 1313 1296 1157 945 657 479 10545
40 S 435 902 1585 2420 3497 4698 6011 7307 8464 9409 10066 10545 10545
45 M 300 335 530 686 922 1050 1158 1141 1007 790 509 336 8765
45 S 300 635 1165 1851 2773 3823 4981 6122 7129 7920 8429 8765 8765
50 M 188 219 383 536 767 900 1003 986 857 635 366 215 7056
50 S 188 407 790 1326 2093 2993 3996 4982 5840 6475 6841 7056 7056
55 M 105 127 250 388 612 750 848 831 707 481 238 122 5460
55 S 105 231 481 870 1482 2232 3080 3911 4618 5100 5337 5460 5460
60 M 47 63 141 250 457 600 693 676 557 333 133 58 4008
60 S 47 110 251 501 958 1558 2251 2927 3485 3817 3950 4008 4008
Corn Growing Degree Days
50 M 264 283 430 546 735 833 909 906 820 638 413 290 7068
50 S 264 547 977 1523 2259 3091 4001 4906 5727 6365 6778 7068 7068
Derived form the 1948-2012 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