ENTIAT FISH HATCHERY, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(452563) ENTIAT FISH HATCHERY
From Year=1989 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	1121	879	705	452	264	115	25	26	112	470	830	1113	6112
60	966	738	550	305	142	39	4	3	40	320	680	958	4746
57	873	653	457	222	84	16	1	1	17	237	591	865	4016
55	811	597	396	171	55	7	0	0	8	187	531	803	3566
50	656	456	248	71	12	0	0	0	1	86	382	648	2559

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