HELVETIA SANTA RITA, ARIZONA

Period of Record General Climate Summary - Cooling Degree Days

Station:(023981) HELVETIA SANTA RITA RAN
From Year=1916 To Year=1950
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	15	27	81	239	450	698	758	678	599	359	104	26	4035
57	8	15	53	192	390	638	696	616	539	302	73	14	3537
60	3	4	24	130	302	548	603	523	449	221	37	4	2849
65	0	0	3	52	172	399	448	368	301	109	7	0	1860
70	0	0	0	14	71	254	294	215	161	35	1	0	1044

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