CUYAMACA, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(042239) CUYAMACA
From Year=1948 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	775	660	649	497	332	127	17	23	90	318	561	752	4801
60	620	519	494	351	201	57	3	5	35	185	411	597	3478
57	527	434	403	270	139	33	1	1	18	120	323	504	2772
55	465	378	343	220	106	21	0	0	10	86	267	442	2340
50	314	244	210	119	47	6	0	0	2	33	145	291	1411

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 Jul 28, 2006
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