WEST GLACIER, MONTANA

Period of Record General Climate Summary - Heating Degree Days

Station:(248809) WEST GLACIER
From Year=1949 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1321	1080	1001	707	447	237	91	116	359	703	1012	1262	8334
60	1166	938	846	557	298	121	29	41	221	548	862	1107	6735
57	1073	854	753	467	217	69	11	19	152	455	772	1014	5855
55	1011	797	691	408	168	43	5	10	113	394	712	952	5304
50	856	656	536	266	73	10	0	1	44	249	562	797	4049

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 Oct 31, 2012
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