ANNALY, VIRGIN ISLANDS

Period of Record General Climate Summary - Growing Degree Days

From Year=1972 To Year=2003
Station:(670240) ANNALY
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 1078 991 1106 1098 1190 1213 1250 1251 1193 1220 1128 1100 13818
40 S 1078 2070 3176 4274 5464 6676 7926 9178 10370 11590 12718 13818 13818
45 M 923 850 951 948 1035 1063 1095 1096 1043 1065 978 945 11992
45 S 923 1773 2725 3672 4707 5770 6865 7961 9004 10069 11047 11992 11992
50 M 768 709 796 798 880 913 940 941 893 910 828 790 10166
50 S 768 1477 2273 3071 3951 4864 5804 6745 7638 8548 9376 10166 10166
55 M 613 567 641 648 725 763 785 786 743 755 678 635 8339
55 S 613 1181 1822 2470 3195 3957 4742 5529 6271 7026 7704 8339 8339
60 M 458 426 486 498 570 613 630 631 593 600 528 480 6513
60 S 458 884 1371 1868 2438 3051 3681 4312 4905 5505 6033 6513 6513
Corn Growing Degree Days
50 M 768 708 793 794 870 881 914 914 870 888 822 790 10012
50 S 768 1476 2269 3063 3933 4814 5728 6642 7512 8400 9222 10012 10012
Derived form the 1972-2003 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