ELLENSBURG, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(452505) ELLENSBURG
From Year=1901 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	1192	929	750	515	303	132	37	46	202	524	861	1138	6628
60	1037	788	595	368	173	51	9	10	98	371	711	983	5192
57	944	703	502	283	110	23	3	3	54	283	621	890	4419
55	882	647	440	229	76	12	1	1	34	228	561	828	3939
50	727	505	290	113	22	1	0	0	7	112	412	673	2863

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