WALLA WALLA WB CITY, WASHINGTON

Period of Record General Climate Summary - Cooling Degree Days

Station:(458931) WALLA WALLA WB CITY
From Year=1948 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 8 48 189 383 627 587 311 69 4 1 2230
57 0 1 4 31 146 325 565 525 257 46 2 1 1903
60 0 0 1 15 94 243 472 433 183 22 1 0 1465
65 0 0 0 4 39 132 322 284 88 4 0 0 873
70 0 0 0 0 13 59 190 158 31 0 0 0 452
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