WILLIAMS, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(049677) WILLIAMS
From Year=1906 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	4	11	50	151	376	591	728	667	509	277	41	3	3407
57	2	5	30	111	316	531	666	605	449	222	25	1	2963
60	0	1	12	64	233	441	573	512	360	148	10	0	2356
65	0	0	1	18	117	297	419	357	220	59	1	0	1490
70	0	0	0	3	45	168	266	209	104	18	0	0	812

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