ST MARKS 5 SSE, FLORIDA

Period of Record General Climate Summary - Growing Degree Days

From Year=1907 To Year=1981
Station:(087867) ST MARKS 5 SSE
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 427 425 640 835 1071 1198 1284 1286 1163 943 615 435 10322
40 S 427 852 1491 2327 3398 4597 5880 7166 8329 9272 9887 10322 10322
45 M 291 295 486 685 916 1048 1129 1131 1013 788 468 295 8545
45 S 291 586 1072 1757 2674 3722 4851 5982 6995 7782 8251 8545 8545
50 M 176 182 340 536 761 898 974 976 863 633 328 176 6843
50 S 176 358 698 1234 1995 2894 3867 4844 5706 6339 6667 6843 6843
55 M 90 95 208 387 606 748 819 821 713 480 203 88 5259
55 S 90 184 393 780 1387 2135 2954 3775 4487 4968 5170 5259 5259
60 M 32 36 103 245 452 598 664 666 563 332 104 33 3828
60 S 32 69 172 417 868 1467 2130 2797 3359 3691 3795 3828 3828
Corn Growing Degree Days
50 M 248 251 393 549 740 833 896 897 813 639 389 257 6904
50 S 248 498 892 1440 2181 3014 3910 4807 5620 6258 6647 6904 6904
Derived form the 1907-1981 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