PACKWOOD, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(456262) PACKWOOD
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	894	727	693	516	352	184	80	77	194	455	724	891	5788
60	739	586	538	368	214	81	22	19	88	304	574	736	4269
57	646	502	445	282	143	40	8	6	45	219	484	643	3462
55	584	445	383	227	103	22	4	2	26	168	424	581	2969
50	429	305	234	109	33	3	1	0	4	69	277	426	1890

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