SUNDOWN RCH, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(358221) SUNDOWN RANCH
From Year=1931 To Year=1955
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	911	761	782	613	474	341	191	178	252	444	638	805	6390
60	756	620	628	465	330	208	81	73	138	302	489	650	4739
57	663	535	536	379	249	139	37	32	85	225	402	557	3839
55	601	479	475	323	200	99	19	16	57	178	346	495	3288
50	449	343	329	196	95	28	2	1	15	84	215	342	2099

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