SAN SIMON 9 ESE, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(027567) SAN SIMON 9 ESE
From Year=1962 To Year=1986
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	637	479	365	168	31	0	0	0	5	92	366	615	2758
60	482	338	227	79	9	0	0	0	1	35	228	460	1860
57	390	258	156	47	4	0	0	0	0	18	158	368	1400
55	329	208	117	32	2	0	0	0	0	11	120	307	1128
50	188	106	49	11	0	0	0	0	0	3	53	171	581

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