HATTON 9 SE, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(453546) HATTON 9 SE
From Year=1948 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	1096	810	673	458	246	82	16	19	129	450	786	1035	5801
60	941	669	518	314	131	27	2	3	55	304	636	880	4480
57	848	584	425	233	79	10	0	1	29	224	546	787	3766
55	786	528	365	184	52	4	0	0	18	176	487	725	3323
50	631	388	221	82	12	0	0	0	4	82	341	571	2332

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