RIO PIEDRAS EXP STN, PUERTO RICO

Period of Record General Climate Summary - Growing Degree Days

From Year=1959 To Year=2012
Station:(668306) RIO PIEDRAS EXP STN
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 1081 986 1108 1118 1210 1212 1258 1266 1223 1243 1141 1113 13960
40 S 1081 2067 3175 4293 5503 6715 7973 9239 10462 11706 12847 13960 13960
45 M 926 844 953 968 1055 1062 1103 1111 1073 1088 991 958 12134
45 S 926 1771 2724 3691 4747 5809 6912 8023 9096 10185 11176 12134 12134
50 M 771 703 798 818 900 912 948 956 923 933 841 803 10308
50 S 771 1474 2272 3090 3990 4902 5851 6807 7730 8663 9504 10308 10308
55 M 616 562 643 668 745 762 793 801 773 778 691 648 8481
55 S 616 1178 1821 2489 3234 3996 4790 5590 6364 7142 7833 8481 8481
60 M 461 421 488 518 590 612 638 646 623 623 541 493 6655
60 S 461 882 1370 1888 2478 3090 3728 4374 4997 5621 6162 6655 6655
Corn Growing Degree Days
50 M 768 698 787 796 866 863 901 906 872 887 821 797 9962
50 S 768 1466 2252 3049 3915 4778 5679 6585 7456 8344 9165 9962 9962
Derived form the 1959-2012 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