GLACIER BAY, ALASKA

Period of Record General Climate Summary - Heating Degree Days

Station:(503294) GLACIER BAY
From Year=1966 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	1166	993	994	773	589	387	312	341	495	729	945	1089	8814
60	1011	852	839	623	434	239	160	188	345	574	795	934	6994
57	918	768	746	533	341	153	78	102	255	481	705	841	5922
55	856	711	684	473	280	102	38	54	196	419	645	779	5236
50	701	570	529	324	136	17	2	3	64	265	495	624	3728

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