HOLDEN, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(453728) HOLDEN
From Year=1930 To Year=1957
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1362 1050 1003 697 470 320 143 158 287 667 1035 1247 8438
60 1207 909 848 547 320 188 59 66 168 514 885 1092 6803
57 1114 824 755 458 237 120 28 31 112 425 795 999 5897
55 1052 768 693 399 188 81 15 16 82 367 735 937 5333
50 897 627 538 259 89 21 2 2 31 233 585 782 4065
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