COLVILLE AIRPORT, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(451650) COLVILLE AIRPORT
From Year=1948 To Year=1987
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1261 960 836 556 324 141 42 48 228 590 933 1185 7105
60 1106 819 681 408 190 56 9 11 120 435 783 1030 5649
57 1013 734 588 321 126 26 3 3 73 345 693 937 4862
55 951 678 526 264 90 14 1 1 49 287 633 875 4370
50 796 537 372 139 29 1 0 0 14 158 484 720 3250
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