ASTORIA RGNL AP, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(350328) ASTORIA WSO AIRPORT
From Year=1953 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	698	588	604	505	384	245	153	135	200	382	544	684	5123
60	543	447	449	356	233	105	30	23	74	230	395	529	3413
57	450	362	356	268	148	40	4	3	27	147	306	436	2546
55	388	306	295	210	97	15	1	0	11	100	248	375	2044
50	238	172	149	83	16	0	0	0	0	24	121	225	1028

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