SAN SEBASTIAN 2 WNW, PUERTO RICO

Period of Record General Climate Summary - Growing Degree Days

From Year=1955 To Year=1997
Station:(668881) SAN SEBASTIAN 2 WNW
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 1056 964 1096 1101 1193 1186 1233 1243 1188 1214 1121 1089 13683
40 S 1056 2019 3116 4217 5410 6596 7830 9072 10260 11474 12595 13683 13683
45 M 901 823 941 951 1038 1036 1078 1088 1038 1059 971 934 11857
45 S 901 1723 2665 3616 4654 5690 6768 7856 8894 9952 10923 11857 11857
50 M 746 681 786 801 883 886 923 933 888 904 821 779 10031
50 S 746 1427 2213 3015 3898 4784 5707 6640 7528 8431 9252 10031 10031
55 M 591 540 631 651 728 736 768 778 738 749 671 624 8205
55 S 591 1131 1762 2414 3142 3878 4646 5424 6162 6910 7581 8205 8205
60 M 436 399 476 501 573 586 613 623 588 594 521 469 6379
60 S 436 835 1311 1812 2386 2972 3585 4208 4795 5389 5910 6379 6379
Corn Growing Degree Days
50 M 712 648 738 742 809 801 827 831 793 814 762 742 9219
50 S 712 1360 2099 2840 3649 4450 5276 6107 6900 7714 8477 9219 9219
Derived form the 1955-1997 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