POTTER VALLEY P H, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(047109) POTTER VALLEY P H
From Year=1948 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	619	470	440	309	169	54	5	6	33	174	435	627	3341
60	464	329	289	178	74	14	0	1	7	74	288	472	2190
57	372	246	206	113	38	5	0	0	2	37	205	379	1601
55	310	194	155	78	21	2	0	0	1	21	155	318	1256
50	167	86	61	23	3	0	0	0	0	3	61	175	579

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