CHARLOTTE AMALIE HAR, VIRGIN ISLANDS

Period of Record General Climate Summary - Cooling Degree Days

From Year=1972 To Year=2012
Station:(678905) CHARLOTTE AMALIE HAR
Averages Daily Extremes
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 728 667 747 759 832 851 898 902 856 856 782 756 9635
57 666 610 685 699 770 791 836 840 796 794 722 694 8904
60 573 525 592 609 677 701 743 747 706 701 632 601 7808
65 418 384 437 459 522 551 588 592 556 546 482 446 5982
70 263 242 282 309 367 401 433 437 406 391 332 291 4155
Cooling 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.
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