BERRYESSA LAKE, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(040705) BERRYESSA LAKE
From Year=1957 To Year=1970
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	3	12	35	129	280	489	679	682	525	322	64	8	3228
57	2	5	20	93	224	430	617	620	465	262	40	5	2782
60	1	0	7	51	150	342	524	528	375	179	18	2	2177
65	0	0	0	12	61	205	370	375	232	73	3	1	1330
70	0	0	0	1	16	104	222	226	112	21	0	0	701

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