SPRAGUE, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(457956) SPRAGUE
From Year=1899 To Year=1982
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1196	903	773	527	311	137	33	49	199	516	851	1074	6570
60	1041	762	618	379	183	56	7	13	100	365	701	919	5146
57	948	677	525	294	120	27	2	5	59	280	611	826	4375
55	886	621	464	241	86	14	1	2	39	228	551	764	3896
50	731	480	313	125	28	2	0	0	11	117	402	609	2818

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