BLUE, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(020855) BLUE
From Year=1903 To Year=1989
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	898	719	664	450	240	48	5	7	85	364	655	880	5015
60	743	577	509	302	118	11	1	0	20	216	505	725	3728
57	650	492	417	218	67	3	0	0	6	140	415	632	3041
55	588	436	355	167	42	1	0	0	2	99	356	570	2616
50	433	297	212	70	9	0	0	0	0	36	212	415	1684

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