WALLA WALLA WB CITY, WASHINGTON

Period of Record General Climate Summary - Cooling Degree Days

Station:(458931) WALLA WALLA WB CITY
From Year=1916 To Year=1987
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 1 2 7 46 179 375 622 583 300 68 4 1 2188
57 0 1 3 30 138 318 561 521 247 45 2 1 1866
60 0 0 1 15 87 237 468 428 175 22 1 0 1435
65 0 0 0 4 35 128 318 281 83 4 0 0 853
70 0 0 0 0 11 57 186 155 29 0 0 0 439
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