YAKUTAT STATE AP, ALASKA

Period of Record General Climate Summary - Heating Degree Days

Station:(509941) YAKUTAT WB AIRPORT
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	1230	1025	1060	843	659	445	343	356	498	745	980	1140	9326
60	1075	884	905	693	504	296	189	202	348	590	830	985	7502
57	982	799	812	603	412	207	102	114	258	497	740	892	6419
55	920	743	750	543	350	151	53	63	200	435	680	830	5719
50	765	601	595	393	202	41	3	6	75	281	530	675	4168

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