VANCOUVER 4 NNE, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(458773) VANCOUVER 4 NNE
From Year=1898 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	819	648	578	419	272	132	45	45	130	356	592	773	4808
60	664	507	423	274	142	43	7	7	45	210	442	618	3382
57	571	423	331	194	81	15	1	1	17	134	353	525	2647
55	509	366	272	146	50	6	0	0	8	94	294	463	2208
50	356	230	136	53	9	0	0	0	1	27	159	312	1283

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