MAYFIELD PWR PLT, WASHINGTON

Period of Record General Climate Summary - Cooling Degree Days

Station:(455110) MAYFIELD POWER PLANT
From Year=1980 To Year=2012
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	32	52	105	275	380	242	21	0	0	1106
57	0	0	0	22	33	67	215	318	186	8	0	0	848
60	0	0	0	11	15	26	136	225	120	1	0	0	534
65	0	0	0	2	1	3	40	95	47	0	0	0	188
70	0	0	0	0	0	0	2	35	9	0	0	0	47

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 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