RUFF 3 SW, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(457223) RUFF 3 SW
From Year=1925 To Year=1956
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1194	916	703	433	248	98	15	27	149	454	841	1069	6147
60	1039	775	548	293	133	34	2	4	69	308	691	914	4809
57	946	690	456	216	82	13	0	1	39	227	601	821	4092
55	884	634	395	170	55	6	0	0	25	179	541	759	3648
50	729	493	249	79	14	0	0	0	6	84	392	604	2651

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