CAYEY 1 E, PUERTO RICO

Period of Record General Climate Summary - Cooling Degree Days

From Year=1955 To Year=2007
Station:(661901) CAYEY 1 E
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
55 440 405 474 515 603 636 664 663 626 616 538 478 6659
57 378 348 412 455 541 576 602 601 566 554 478 416 5928
60 285 263 319 365 448 486 509 508 476 461 388 323 4833
65 132 124 165 215 293 336 354 353 326 306 238 169 3012
70 18 17 36 75 139 186 199 198 177 151 92 38 1327
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