ROSALIA, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(457180) ROSALIA
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	1128	891	802	572	374	197	68	67	226	540	854	1087	6807
60	973	750	647	424	239	97	20	21	123	390	704	932	5320
57	880	665	554	338	169	55	7	8	77	305	614	839	4512
55	818	609	492	284	128	34	3	4	53	252	555	777	4008
50	663	468	341	160	52	7	0	0	16	137	406	623	2873

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