SKWENTNA, ALASKA

Period of Record General Climate Summary - Heating Degree Days

Station:(508536) SKWENTNA
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	1796	1485	1346	923	604	297	209	302	573	1018	1444	1736	11734
60	1641	1344	1191	773	450	162	84	156	424	863	1294	1581	9962
57	1548	1259	1098	683	359	96	34	84	334	770	1204	1488	8956
55	1486	1203	1036	623	299	61	14	50	275	708	1144	1426	8324
50	1331	1061	881	473	165	11	0	8	142	553	994	1271	6890

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