TONASKET 4 NNE, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(458520) TONASKET 4 NNE
From Year=1984 To Year=2004
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1138	901	694	410	222	73	12	20	151	519	867	1148	6156
60	983	760	539	264	109	20	1	2	64	367	717	993	4819
57	890	675	446	184	62	7	0	1	32	281	627	900	4104
55	828	619	385	137	38	3	0	0	19	228	568	838	3661
50	673	477	238	51	8	0	0	0	3	116	419	683	2670

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