MT SHASTA, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(045983) MOUNT SHASTA
From Year=1948 To Year=2010
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	948	766	744	563	355	158	37	53	160	433	729	931	5876
60	793	625	589	414	222	73	9	14	74	287	579	776	4454
57	700	540	496	327	155	40	3	5	42	207	489	683	3689
55	638	484	434	274	118	26	2	2	27	161	430	621	3215
50	483	343	286	156	49	6	0	0	6	72	286	466	2153

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