POINT ARENA, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(047009) POINT ARENA
From Year=1948 To Year=1988
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	524	433	462	420	354	263	229	202	195	277	397	503	4260
60	370	293	307	271	201	119	81	62	69	133	248	349	2501
57	278	209	215	183	114	48	21	15	24	64	164	256	1590
55	218	157	157	127	64	18	5	3	8	32	114	197	1100
50	90	53	44	27	5	1	0	0	0	2	32	77	330

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