OROVILLE 3 NW, WASHINGTON

Period of Record General Climate Summary - Cooling Degree Days

Station:(456188) OROVILLE 3 NW
From Year=1909 To Year=1960
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	1	34	170	329	553	489	228	27	0	0	1831
57	0	0	0	20	127	271	491	427	179	16	0	0	1531
60	0	0	0	7	74	191	399	336	115	6	0	0	1128
65	0	0	0	1	22	87	251	193	42	1	0	0	597
70	0	0	0	0	5	31	127	81	10	0	0	0	253

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