PATILLAS DAM, PUERTO RICO

Period of Record General Climate Summary - Growing Degree Days

From Year=1948 To Year=1969
Station:(666904) PATILLAS DAM
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 1063 985 1085 1080 1153 1127 1177 1207 1162 1188 1118 1112 13458
40 S 1063 2048 3133 4213 5366 6493 7671 8878 10040 11228 12346 13458 13458
45 M 908 843 930 930 998 977 1022 1052 1012 1033 968 957 11632
45 S 908 1752 2682 3611 4610 5587 6609 7661 8673 9707 10674 11632 11632
50 M 753 702 775 780 843 827 867 897 862 878 818 802 9805
50 S 753 1456 2230 3010 3853 4681 5548 6445 7307 8185 9003 9805 9805
55 M 598 561 620 630 688 677 712 742 712 723 668 647 7979
55 S 598 1159 1779 2409 3097 3775 4487 5229 5941 6664 7332 7979 7979
60 M 444 420 465 480 533 527 557 587 562 568 518 492 6153
60 S 444 863 1328 1808 2341 2868 3426 4013 4575 5143 5661 6153 6153
Corn Growing Degree Days
50 M 752 697 770 769 831 815 858 873 839 860 810 800 9675
50 S 752 1449 2220 2989 3819 4635 5493 6366 7205 8065 8874 9675 9675
Derived form the 1948-1969 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