BEN LOMOND #4, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(040674) BEN LOMOND
From Year=1937 To Year=1965
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	593	460	450	313	222	116	44	46	66	189	387	529	3417
60	438	318	296	175	91	28	3	4	9	74	242	375	2055
57	346	235	206	104	39	8	0	1	2	32	162	283	1417
55	285	182	151	64	18	3	0	0	1	17	115	223	1058
50	146	74	50	11	1	0	0	0	0	3	34	95	413

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