CHEWELAH, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(451395) CHEWELAH
From Year=1948 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	1241	962	817	543	322	145	54	61	235	587	903	1175	7046
60	1086	821	662	395	191	60	14	17	124	433	753	1020	5577
57	993	737	569	309	126	30	5	6	77	343	663	927	4784
55	931	680	507	254	91	17	2	3	52	285	603	865	4290
50	776	539	353	132	30	2	0	0	15	158	454	710	3168

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