TUCSON WFO, ARIZONA

Period of Record General Climate Summary - Cooling Degree Days

Station:(028815) TUCSON UNIV OF ARIZONA
From Year=1894 To Year=2008
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 37 70 167 336 596 849 993 936 782 480 163 42 5450
57 21 46 125 281 534 789 931 874 722 419 121 24 4886
60 7 20 74 205 443 699 838 781 632 331 70 9 4108
65 1 3 23 100 296 549 683 626 482 197 20 1 2979
70 0 0 4 35 165 400 528 471 333 92 3 0 2030
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