PULLMAN EXP STN, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(456784) PULLMAN EXP STN
From Year=1893 To Year=1954
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1140	929	808	540	355	186	43	55	211	493	815	1040	6614
60	985	787	653	394	222	90	11	16	112	346	665	885	5165
57	892	703	560	311	154	49	4	6	69	265	575	792	4379
55	830	646	498	259	115	30	2	3	47	214	515	731	3889
50	675	505	347	143	43	7	0	0	14	110	367	576	2788

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