SAINT JOHN, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(457267) SAINT JOHN
From Year=1963 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	1046	823	731	531	332	152	42	49	190	515	808	1061	6282
60	891	682	576	384	198	63	9	12	93	365	658	906	4838
57	798	597	483	299	131	30	3	4	54	280	568	813	4061
55	736	541	422	246	94	16	1	2	35	227	509	751	3579
50	582	400	273	129	31	2	0	0	9	116	362	596	2500

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