SITKUM, OREGON

Period of Record General Climate Summary - Cooling Degree Days

Station:(357866) SITKUM
From Year=1944 To Year=1969
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	0	2	3	16	56	138	247	261	178	56	4	1	961
57	0	0	1	9	33	94	186	200	128	33	2	0	686
60	0	0	0	3	13	45	105	118	67	12	0	0	365
65	0	0	0	1	2	10	23	28	16	1	0	0	81
70	0	0	0	0	0	2	3	2	3	0	0	0	10

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