RICHLAND, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(357160) RICHLAND
From Year=1948 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1103	832	695	449	229	73	17	15	122	437	789	1043	5805
60	948	691	541	307	120	25	7	3	52	290	639	888	4511
57	855	606	449	228	72	11	4	1	27	211	549	795	3808
55	793	550	388	180	48	5	3	0	16	165	489	733	3371
50	638	409	243	83	13	1	1	0	3	76	343	578	2388

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 Jul 28, 2006
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