MT TRUMBULL, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(025744) MOUNT TRUMBULL
From Year=1919 To Year=1977
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 835 718 657 548 237 46 3 5 42 354 712 971 5129
60 680 576 502 398 120 13 1 0 7 234 562 816 3910
57 587 490 410 312 74 6 0 0 2 184 472 723 3260
55 525 434 350 257 49 3 0 0 0 152 412 661 2842
50 370 294 208 145 16 0 0 0 0 88 264 506 1890
Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. 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