OROVILLE 3 NW, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(456188) OROVILLE 3 NW
From Year=1909 To Year=1960
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1216	966	737	402	189	59	8	15	129	466	828	1087	6102
60	1061	825	582	259	85	14	1	2	52	317	678	932	4808
57	968	740	489	181	45	4	0	0	26	233	588	839	4114
55	906	684	427	135	27	1	0	0	15	183	528	777	3684
50	751	543	279	51	4	0	0	0	3	84	378	622	2717

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