ANTIOCH PUMP PLANT 3, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(040232) ANTIOCH PUMP PLANT 3
From Year=1955 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	608	408	332	200	80	15	2	1	9	90	345	586	2677
60	453	267	186	91	21	2	0	0	1	25	203	431	1680
57	361	186	112	47	7	0	0	0	0	9	131	340	1193
55	300	137	72	27	3	0	0	0	0	4	92	280	914
50	161	45	14	4	0	0	0	0	0	1	26	143	394

Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. 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