YAKIMA WSO AP, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(459465) YAKIMA WSO AP
From Year=1946 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1110 826 691 469 251 92 24 29 152 481 812 1072 6009
60 955 684 536 323 135 31 4 5 66 330 662 917 4648
57 862 600 443 240 82 12 1 1 33 246 572 824 3916
55 800 543 382 190 55 5 0 0 19 193 512 762 3461
50 646 403 234 84 13 0 0 0 3 88 364 607 2443
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 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