TACOMA 1, WASHINGTON

Period of Record General Climate Summary - Cooling Degree Days

Station:(458278) TACOMA 1
From Year=1982 To Year=2006
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	1	1	3	25	104	217	344	352	193	45	3	0	1287
57	0	0	1	14	68	161	282	290	139	24	1	0	980
60	0	0	0	4	32	91	191	198	73	7	0	0	597
65	0	0	0	0	6	25	68	70	14	0	0	0	183
70	0	0	0	0	1	4	13	10	1	0	0	0	30

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 Jul 28, 2006
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