PULLMAN 2 NW, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(456789) PULLMAN 2 NW
From Year=1940 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	1122	881	806	578	382	208	70	72	220	511	839	1069	6756
60	967	740	651	430	244	101	20	22	117	363	689	914	5257
57	874	656	558	344	172	55	7	8	72	280	599	821	4446
55	812	599	496	289	130	33	3	4	50	229	539	759	3942
50	657	458	345	165	52	5	0	0	14	121	391	604	2813

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