VANCOUVER 4 NNE, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(458773) VANCOUVER 4 NNE
From Year=1856 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	817	648	582	424	275	134	45	45	132	359	595	775	4831
60	662	506	427	279	145	44	7	7	46	212	445	620	3402
57	569	422	335	198	84	16	1	1	18	136	356	527	2664
55	507	366	276	150	52	7	0	0	8	95	297	465	2223
50	355	229	140	55	9	0	0	0	1	28	162	314	1292

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