VALYERMO FIRE STN 2, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(049251) VALYERMO RANGER STN
From Year=1915 To Year=1971
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	716	573	537	320	177	46	1	5	38	218	493	665	3788
60	561	432	383	189	81	13	0	1	10	104	345	510	2629
57	468	348	293	127	45	5	0	0	3	61	260	418	2027
55	407	292	237	93	28	2	0	0	1	41	208	357	1667
50	260	168	119	37	7	0	0	0	0	13	100	215	917

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