RIO PIEDRAS EXP STN, PUERTO RICO

Period of Record General Climate Summary - Cooling Degree Days

From Year=1959 To Year=2012
Station:(668306) RIO PIEDRAS EXP STN
Averages Daily Extremes
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 616 562 643 668 745 762 793 801 773 778 691 648 8481
57 554 505 581 608 683 702 731 739 713 716 631 586 7751
60 461 421 488 518 590 612 638 646 623 623 541 493 6655
65 306 279 333 368 435 462 483 491 473 468 391 338 4829
70 152 139 180 218 280 312 328 336 323 313 241 183 3006
Cooling 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.
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