DAYTON 1 WSW, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(452030) DAYTON 1 WSW
From Year=1931 To Year=2005
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1001	780	666	455	267	109	22	28	137	417	731	940	5553
60	846	639	511	312	148	40	3	6	59	273	581	785	4203
57	753	554	419	233	92	17	1	1	30	196	492	692	3481
55	691	498	359	184	63	8	0	0	18	150	433	631	3035
50	538	359	218	84	17	1	0	0	4	64	291	478	2053

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