SAN SIMON, ARIZONA

Period of Record General Climate Summary - Cooling Degree Days

Station:(027560) SAN SIMON
From Year=1898 To Year=2012
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	2	8	53	191	423	686	822	763	584	275	33	1	3842
57	1	4	32	144	362	626	760	701	524	221	19	0	3394
60	0	1	12	85	274	536	667	608	435	147	7	0	2771
65	0	0	1	25	143	386	512	453	286	54	1	0	1862
70	0	0	0	4	50	242	358	298	149	11	0	0	1112

Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. 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