PARKWAY 6 S CRYSTAL CRE, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(456385) PARKWAY 6 S CRYSTAL CRE
From Year=1948 To Year=1966
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1161	975	1033	803	629	427	258	274	385	663	914	1073	8596
60	1006	834	878	653	476	287	139	152	249	508	764	918	6865
57	913	750	785	563	386	210	86	94	178	418	674	825	5882
55	851	693	723	503	329	163	57	64	136	359	614	763	5255
50	696	552	568	354	198	72	14	15	58	224	465	608	3824

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