JOHN DAY, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(354291) JOHN DAY
From Year=1903 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	1026	816	749	565	357	157	37	46	187	478	772	1001	6192
60	871	675	594	418	227	73	10	14	96	330	622	846	4777
57	778	590	501	333	161	40	4	6	59	250	532	753	4007
55	716	533	440	280	122	25	2	3	40	202	473	691	3527
50	562	393	293	161	51	5	0	0	12	103	330	536	2446

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