IDYLLWILD FIRE DEPT, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(044211) IDYLLWILD FIRE DEPT
From Year=1943 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	1	1	2	20	86	236	423	407	271	91	10	1	1550
57	0	0	1	11	58	187	362	346	218	62	4	0	1250
60	0	0	0	3	28	122	271	257	147	30	1	0	859
65	0	0	0	0	5	44	133	124	56	5	0	0	367
70	0	0	0	0	1	8	40	34	9	0	0	0	92

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