SHASTA DAM, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(048135) SHASTA DAM
From Year=1948 To Year=2005
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	4	14	51	149	351	579	827	777	590	321	53	5	3723
57	2	7	33	114	298	520	765	715	531	267	34	2	3289
60	0	2	15	70	224	434	672	622	443	193	15	0	2691
65	0	0	2	24	122	296	518	469	303	96	3	0	1832
70	0	0	0	5	53	175	365	320	177	38	0	0	1134

Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. 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