RAINIER OHANAPECOSH, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(456896) RAINIER OHANAPECOSH
From Year=1948 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	1057	897	890	718	428	-99	128	132	355	505	859	1024	-99
60	902	755	735	569	283	-99	46	53	213	361	709	869	-99
57	809	669	642	480	205	-99	22	24	136	283	619	776	-99
55	747	612	580	422	159	-99	10	11	94	235	559	714	-99
50	592	470	426	282	72	-99	0	1	23	122	409	559	-99

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