MONROE, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(455525) MONROE
From Year=1929 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	813	655	619	455	300	156	69	63	172	406	632	787	5127
60	658	514	464	306	160	50	10	8	62	255	482	632	3601
57	565	429	371	221	92	17	2	1	25	172	392	539	2825
55	503	373	310	168	56	6	0	0	12	124	333	477	2363
50	350	236	166	61	8	0	0	0	1	40	194	324	1380

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