ARLINGTON, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(450257) ARLINGTON
From Year=1922 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 871 672 674 502 390 230 114 102 133 444 674 825 5629
60 716 530 519 353 238 103 29 19 47 291 524 670 4038
57 623 445 426 269 152 47 8 3 16 201 434 577 3200
55 561 389 364 215 102 23 2 1 5 146 374 515 2695
50 407 249 212 102 20 2 0 0 0 40 228 362 1621
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