ARIZONA SONORA DST M, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(028805) TUCSON MOUNTAIN PARK
From Year=1943 To Year=1954
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	433	271	213	57	7	0	0	0	0	17	172	320	1491
60	291	154	108	22	1	0	0	0	0	4	91	192	862
57	215	98	64	11	1	0	0	0	0	2	56	128	575
55	172	70	44	6	0	0	0	0	0	1	37	92	423
50	85	25	13	1	0	0	0	0	0	0	8	33	165

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