CRUZ BAY, VIRGIN ISLANDS

Period of Record General Climate Summary - Growing Degree Days

From Year=1972 To Year=2012
Station:(671980) CRUZ BAY
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 1138 1037 1144 1150 1247 1256 1313 1319 1261 1277 1191 1166 14499
40 S 1138 2174 3319 4469 5716 6971 8285 9604 10865 12143 13333 14499 14499
45 M 983 896 989 1000 1092 1106 1158 1164 1111 1122 1041 1011 12673
45 S 983 1878 2868 3867 4959 6065 7224 8388 9499 10621 11662 12673 12673
50 M 828 754 834 850 937 956 1003 1009 961 967 891 856 10847
50 S 828 1582 2416 3266 4203 5159 6162 7171 8133 9100 9991 10847 10847
55 M 673 613 679 700 782 806 848 854 811 812 741 701 9020
55 S 673 1286 1965 2665 3447 4253 5101 5955 6766 7579 8320 9020 9020
60 M 518 472 524 550 627 656 693 699 661 657 591 546 7194
60 S 518 990 1514 2064 2691 3347 4040 4739 5400 6058 6648 7194 7194
Corn Growing Degree Days
50 M 826 753 832 845 923 925 958 959 915 931 871 852 10590
50 S 826 1579 2411 3257 4179 5104 6062 7021 7936 8867 9738 10590 10590
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