RICHLAND, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(357160) RICHLAND
From Year=1893 To Year=2011
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1118	845	712	469	255	88	16	20	140	450	791	1050	5955
60	963	704	557	325	139	32	5	5	62	302	641	895	4631
57	870	620	465	244	85	15	3	1	33	222	551	802	3912
55	808	563	404	195	58	8	2	1	19	175	491	740	3465
50	653	423	258	93	17	1	1	0	3	83	344	585	2462

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