COUPEVILLE 1 S, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(451783) COUPEVILLE 1 S
From Year=1948 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
65 791 655 635 494 352 221 133 120 231 454 629 763 5477
60 636 513 480 344 201 87 27 20 98 299 479 608 3792
57 543 429 387 256 118 31 4 3 42 209 389 515 2927
55 481 372 325 198 73 12 1 1 20 154 330 453 2418
50 328 233 175 72 10 0 0 0 2 51 187 299 1358
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