MATLOCK 8 S, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(455086) MATLOCK 8 S
From Year=1985 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	801	710	692	568	408	242	103	84	165	454	721	829	5776
60	646	568	537	418	257	100	15	15	60	299	571	674	4158
57	553	482	444	330	171	43	2	2	22	207	481	581	3317
55	491	425	382	272	119	21	0	0	8	151	421	519	2808
50	336	283	228	138	27	1	0	0	0	52	271	364	1698

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