HARPER, OREGON

Period of Record General Climate Summary - Cooling Degree Days

Station:(353666) HARPER 1 S
From Year=1919 To Year=1975
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	0	0	1	17	124	294	532	450	163	18	0	0	1599
57	0	0	0	9	89	240	471	389	121	9	0	0	1328
60	0	0	0	3	50	166	379	300	70	3	0	0	971
65	0	0	0	0	14	74	231	163	20	0	0	0	503
70	0	0	0	0	2	22	104	60	4	0	0	0	192

Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. 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