PUYALLUP 2 W EXP STN, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(456803) PUYALLUP 2 W EXP STN
From Year=1931 To Year=1995
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	801	648	619	458	295	156	66	68	177	406	630	768	5092
60	646	507	464	310	156	51	9	9	66	255	480	613	3566
57	553	422	371	223	88	17	1	1	27	172	390	520	2787
55	491	366	310	169	53	6	0	0	13	125	331	459	2323
50	338	228	165	61	8	0	0	0	1	41	192	307	1341

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