PACKWOOD, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(456262) PACKWOOD
From Year=1924 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	893	726	691	517	347	186	73	71	185	458	723	897	5767
60	738	585	536	369	209	82	19	17	82	306	573	742	4258
57	645	500	443	283	139	40	7	5	41	221	483	649	3456
55	583	443	382	229	99	22	3	2	24	169	423	587	2965
50	428	303	233	111	31	3	0	0	3	68	276	432	1889

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 Oct 31, 2012
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