OREGON CITY, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(356334) OREGON CITY
From Year=1911 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	741	579	535	382	230	95	22	20	81	311	554	731	4282
60	586	438	380	241	113	26	1	1	21	172	404	576	2959
57	493	354	289	164	61	8	0	0	6	105	316	483	2278
55	431	298	231	118	36	2	0	0	3	69	258	422	1869
50	282	169	106	36	5	0	0	0	0	17	131	272	1018

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