SKYKOMISH, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(457708) SKYKOMISH
From Year=1935 To Year=1955
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 950 848 755 510 335 189 116 106 200 468 757 897 6129
60 795 707 600 361 201 82 30 25 91 320 607 742 4560
57 702 622 507 275 132 40 9 6 47 235 517 649 3739
55 640 566 446 219 92 22 4 2 26 182 457 587 3242
50 485 424 295 100 25 2 0 0 3 78 308 432 2152
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