ANACAPA ISLAND, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(040188) ANACAPA ISLAND
From Year=1948 To Year=2000
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	310	265	276	226	176	96	47	38	42	94	140	278	1987
60	164	133	129	91	57	12	3	2	1	11	34	132	770
57	90	70	61	33	15	1	0	0	0	1	7	59	338
55	52	38	30	9	3	0	0	0	0	0	2	26	161
50	8	5	2	0	0	0	0	0	0	0	0	1	16

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