METHOW 2 S, WASHINGTON

Period of Record General Climate Summary - Cooling Degree Days

Station:(455326) METHOW 2 S
From Year=1970 To Year=2006
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	0	0	0	19	120	278	490	481	203	21	0	0	1613
57	0	0	0	10	86	224	429	420	158	13	0	0	1340
60	0	0	0	4	49	153	339	330	101	5	0	0	981
65	0	0	0	1	15	70	200	193	36	1	0	0	516
70	0	0	0	0	3	24	93	90	7	0	0	0	217

Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. 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