WALLA WALLA 3 W ENT LA, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(458926) WALLA WALLA 3 W ENT LA
From Year=1931 To Year=1962
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1000 757 597 345 172 50 3 6 91 358 712 874 4965
60 845 616 442 209 73 9 0 0 31 218 562 719 3726
57 752 531 351 139 35 2 0 0 14 147 473 627 3072
55 690 475 293 100 18 1 0 0 7 108 415 565 2673
50 539 339 160 31 2 0 0 0 1 41 279 416 1809
Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. 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