ST CROIX FAA HAMILTO, VIRGIN ISLANDS

Period of Record General Climate Summary - Growing Degree Days

From Year=1972 To Year=2012
Station:(670198) ST CROIX FAA HAMILTO
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 1174 1076 1194 1196 1282 1292 1349 1352 1288 1304 1212 1204 14925
40 S 1174 2250 3444 4640 5922 7215 8564 9917 11205 12509 13721 14925 14925
45 M 1019 935 1039 1046 1127 1142 1194 1197 1138 1149 1062 1049 13099
45 S 1019 1954 2993 4039 5166 6308 7503 8700 9839 10988 12050 13099 13099
50 M 864 793 884 896 972 992 1039 1042 988 994 912 894 11272
50 S 864 1657 2541 3437 4410 5402 6442 7484 8472 9466 10378 11272 11272
55 M 709 652 729 746 817 842 884 887 838 839 762 739 9446
55 S 709 1361 2090 2836 3653 4496 5380 6268 7106 7945 8707 9446 9446
60 M 554 511 574 596 662 692 729 732 688 684 612 584 7620
60 S 554 1065 1639 2235 2897 3590 4319 5051 5740 6424 7036 7620 7620
Corn Growing Degree Days
50 M 862 791 879 886 950 956 993 991 943 957 894 890 10993
50 S 862 1653 2532 3418 4368 5324 6317 7308 8251 9209 10103 10993 10993
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