HAYFIELD PUMP PLT, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(043855) HAYFIELD RESERVOIR
From Year=1933 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	42	81	192	367	622	841	1079	1044	832	514	175	44	5834
57	24	54	147	312	560	781	1017	982	772	453	131	25	5259
60	10	26	91	233	468	691	924	889	682	364	78	9	4466
65	1	5	33	123	320	542	769	734	532	224	23	1	3309
70	0	1	7	50	188	394	614	579	384	110	4	0	2330

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