STARTUP 1 E, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(458034) STARTUP 1 E
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	798	638	626	471	318	177	86	77	181	417	619	775	5184
60	643	497	471	324	182	70	19	14	70	267	470	620	3649
57	550	413	379	241	114	29	4	3	29	185	381	527	2856
55	489	357	318	189	77	14	1	1	14	137	323	465	2384
50	337	222	176	78	17	1	0	0	2	50	188	312	1383

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