SANTA ANA RIVER PH 1, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(047894) SANTA ANA RIVER PH 1
From Year=1903 To Year=1967
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	509	403	375	250	150	42	2	3	18	114	270	464	2602
60	357	270	238	140	67	10	0	0	3	50	154	314	1604
57	271	198	167	89	35	3	0	0	1	27	100	232	1121
55	218	154	127	61	20	1	0	0	0	16	71	182	850
50	109	68	51	19	4	0	0	0	0	4	25	83	362

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