ANACORTES, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(450176) ANACORTES
From Year=1931 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
65 764 637 608 455 314 179 102 98 195 401 592 731 5076
60 609 495 453 305 167 58 15 13 70 248 442 576 3452
57 516 411 360 218 92 17 2 2 26 162 353 483 2641
55 454 354 298 162 54 5 0 0 11 112 293 421 2166
50 302 216 153 51 7 0 0 0 1 30 155 269 1183
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