GILROY, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(043417) GILROY
From Year=1957 To Year=2006
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	7	24	66	130	254	382	498	498	424	264	59	7	2615
57	3	12	40	92	199	323	436	436	364	209	35	2	2152
60	0	3	16	49	127	236	343	343	275	136	13	1	1543
65	0	0	2	12	47	112	191	191	140	50	1	0	747
70	0	0	0	2	12	37	71	67	47	11	0	0	248

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 Jul 28, 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