GRANITE REEF DAM, ARIZONA

Period of Record General Climate Summary - Cooling Degree Days

Station:(023621) GRANITE REEF DAM
From Year=1893 To Year=1979
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 36 71 176 359 602 837 1070 1025 840 521 197 48 5783
57 20 45 130 302 540 777 1008 963 780 460 150 27 5203
60 7 19 75 222 448 687 915 870 690 370 91 11 4405
65 1 3 21 108 300 537 760 715 540 228 29 1 3244
70 0 0 3 37 167 388 605 560 391 112 5 0 2267
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 Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu