WAPATO, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(458959) WAPATO
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	1052	771	617	375	174	53	10	12	93	403	750	1022	5333
60	897	630	462	238	81	13	1	1	32	258	600	867	4082
57	804	545	371	165	44	4	0	0	14	181	510	774	3414
55	742	489	312	123	26	1	0	0	8	137	451	712	3000
50	588	349	173	43	4	0	0	0	1	52	306	558	2075

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