TOLT SOUTH FORK RESER, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(458508) TOLT SOUTH FORK RESER
From Year=1962 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	979	729	776	756	516	307	164	117	324	483	-99	876	-99
60	824	589	621	606	366	184	72	47	198	340	-99	721	-99
57	731	505	528	516	280	119	36	22	131	260	-99	628	-99
55	669	449	466	456	227	87	19	13	92	209	-99	566	-99
50	514	310	313	309	118	23	0	1	28	103	-99	411	-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