OJAI, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(046399) OJAI
From Year=1905 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	425	341	311	208	124	41	2	2	14	83	235	399	2185
60	273	207	171	93	37	6	0	0	1	21	115	249	1173
57	190	136	102	46	13	1	0	0	0	6	62	167	723
55	141	95	66	25	5	0	0	0	0	2	38	120	491
50	51	26	14	3	0	0	0	0	0	0	7	39	141

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