SHASTA DAM, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(048135) SHASTA DAM
From Year=1948 To Year=2005
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	606	458	400	234	93	17	1	2	12	96	362	574	2855
60	451	319	258	130	39	5	0	0	3	38	225	419	1888
57	360	240	183	84	20	2	0	0	1	19	154	328	1390
55	300	190	139	59	12	1	0	0	0	11	113	269	1094
50	162	87	56	20	2	0	0	0	0	1	39	136	504

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 Apr 5, 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