KENNEWICK, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(454154) KENNEWICK
From Year=1894 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 996 742 569 327 143 30 2 5 78 357 684 936 4871
60 841 601 415 192 55 5 0 0 25 217 535 781 3668
57 748 517 324 123 24 1 0 0 10 146 446 689 3028
55 687 461 266 85 11 0 0 0 5 106 388 627 2636
50 535 324 138 23 1 0 0 0 1 39 252 476 1788
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