TACOMA #1, WASHINGTON

Period of Record General Climate Summary - Cooling Degree Days

Station:(458278) TACOMA 1
From Year=1982 To Year=2012
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 1 0 4 24 99 209 345 351 196 43 3 0 1275
57 0 0 1 13 65 154 283 289 142 22 1 0 970
60 0 0 0 4 31 85 192 197 75 6 0 0 590
65 0 0 0 0 6 23 67 69 14 0 0 0 179
70 0 0 0 0 1 4 13 11 1 0 0 0 29
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