STOCKDILL RANCH, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(458115) STOCKDILL RANCH
From Year=1909 To Year=1963
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1471	1161	986	643	433	247	103	121	317	648	1025	1365	8519
60	1316	1019	831	494	283	124	30	40	182	493	875	1210	6898
57	1223	935	738	405	201	69	11	16	117	401	785	1117	6017
55	1161	878	676	346	152	42	4	8	82	341	725	1055	5471
50	1006	737	521	207	61	7	0	1	26	203	575	900	4244

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