SAINT JOHN, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(457267) SAINT JOHN
From Year=1963 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1054	826	732	529	331	152	45	51	194	515	813	1059	6302
60	899	685	577	382	198	64	10	12	96	364	663	904	4854
57	806	600	484	297	131	31	3	4	55	279	573	811	4075
55	744	544	423	244	94	17	1	2	36	226	513	749	3592
50	589	403	274	128	31	2	0	0	10	116	367	594	2515

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 Jul 28, 2006
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