CHARLOTTE AMALIE HAR, VIRGIN ISLANDS

Period of Record General Climate Summary - Growing Degree Days

From Year=1972 To Year=2012
Station:(678905) CHARLOTTE AMALIE HAR
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 1193 1091 1212 1209 1297 1301 1363 1367 1306 1321 1232 1221 15114
40 S 1193 2284 3497 4706 6003 7304 8667 10034 11340 12661 13893 15114 15114
45 M 1038 950 1057 1059 1142 1151 1208 1212 1156 1166 1082 1066 13288
45 S 1038 1988 3045 4104 5246 6398 7605 8817 9973 11139 12221 13288 13288
50 M 883 808 902 909 987 1001 1053 1057 1006 1011 932 911 11461
50 S 883 1691 2594 3503 4490 5491 6544 7601 8607 9618 10550 11461 11461
55 M 728 667 747 759 832 851 898 902 856 856 782 756 9635
55 S 728 1395 2142 2901 3733 4585 5482 6384 7240 8096 8878 9635 9635
60 M 573 525 592 609 677 701 743 747 706 701 632 601 7808
60 S 573 1098 1691 2300 2977 3678 4421 5168 5874 6575 7207 7808 7808
Corn Growing Degree Days
50 M 874 800 888 889 959 954 992 992 952 967 908 899 11074
50 S 874 1674 2562 3451 4410 5364 6356 7348 8299 9266 10175 11074 11074
Derived form the 1972-2012 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