TIDEWATER, OREGON

Period of Record General Climate Summary - Cooling Degree Days

Station:(358481) TIDEWATER FISH HATCHERY
From Year=1940 To Year=2002
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	1	3	5	19	67	140	257	278	215	77	5	1	1066
57	0	1	2	9	42	93	195	216	159	46	2	0	765
60	0	0	0	2	18	44	110	128	88	17	0	0	408
65	0	0	0	0	3	9	23	29	20	2	0	0	87
70	0	0	0	0	0	2	3	5	3	0	0	0	12

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