SPOKANE, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(457933) SPOKANE
From Year=1953 To Year=1983
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1108	830	761	511	281	105	25	35	165	485	816	1019	6143
60	953	689	606	366	162	41	5	8	79	336	666	864	4775
57	860	604	513	282	104	19	1	2	44	252	576	771	4029
55	798	548	452	229	73	10	0	1	28	200	516	709	3564
50	643	407	302	114	22	1	0	0	7	93	368	554	2511

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