ASH MOUNTAIN, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(040343) ASH MOUNTAIN
From Year=1948 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	558	413	375	231	89	13	0	0	6	75	311	536	2607
60	404	276	232	127	39	3	0	0	1	29	186	383	1680
57	315	200	160	82	21	1	0	0	0	15	125	294	1213
55	258	155	119	58	12	0	0	0	0	8	90	239	940
50	133	66	47	20	2	0	0	0	0	1	33	122	424

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