SAN RAFAEL CIVIC CTR, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(047880) SAN RAFAEL CIVIC CENTER
From Year=1894 To Year=2012
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	5	20	50	102	192	300	390	390	354	240	64	9	2116
57	2	9	27	67	141	242	329	328	294	183	38	4	1663
60	0	2	10	33	81	160	236	235	208	109	15	1	1090
65	0	0	1	7	28	65	99	97	91	34	2	0	424
70	0	0	0	1	8	22	29	24	30	8	0	0	122

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 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