CALISTOGA, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(041312) CALISTOGA
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	6	24	58	112	237	406	559	519	425	256	53	5	2660
57	3	13	35	77	184	347	497	457	365	201	32	2	2214
60	1	4	15	41	118	261	404	364	277	129	13	1	1626
65	0	1	2	12	46	134	251	211	142	48	2	0	850
70	0	0	0	2	14	52	117	84	52	14	0	0	335

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