CALISTOGA, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(041312) CALISTOGA
From Year=1948 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	27	59	118	247	405	546	524	425	251	45	5	2659
57	3	15	37	82	194	345	484	462	366	197	25	2	2211
60	1	5	15	44	126	258	391	369	278	126	9	0	1621
65	0	1	2	12	50	130	238	216	142	45	1	0	838
70	0	0	0	2	14	47	104	87	50	12	0	0	315

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