CANYON DE CHELLY, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(021634) CHINLE
From Year=1908 To Year=1970
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1118 833 720 444 190 31 1 2 69 360 750 1064 5583
60 963 691 565 300 91 8 0 0 25 222 600 909 4373
57 870 606 472 222 53 3 0 0 13 153 510 816 3718
55 808 550 411 176 36 1 0 0 8 115 450 754 3309
50 654 409 266 85 11 0 0 0 2 49 305 599 2381
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