PLACERVILLE IFG, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(046962) PLACERVILLE IFG
From Year=1955 To Year=1991
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	606	498	504	357	186	47	5	6	34	146	416	580	3386
60	452	359	353	233	99	16	1	1	11	72	278	427	2304
57	363	280	270	170	61	7	0	0	5	42	205	339	1743
55	306	231	218	134	42	4	0	0	3	28	162	283	1411
50	178	124	111	64	13	1	0	0	0	8	77	164	739

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