METHOW, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(455327) METHOW 2
From Year=1957 To Year=1970
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1335	964	819	511	264	73	16	27	139	536	911	1229	6823
60	1180	823	664	362	143	19	3	5	56	383	761	1074	5473
57	1087	739	571	273	87	6	1	1	27	296	671	981	4739
55	1025	682	509	217	58	3	0	0	14	240	611	919	4278
50	870	541	355	95	14	0	0	0	1	119	461	764	3221

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