HARRINGTON 1 NW, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(453515) HARRINGTON 4 ENE
From Year=1961 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 1191 927 799 582 377 186 65 73 234 580 902 1183 7100
60 1036 786 644 433 237 86 19 22 126 429 752 1028 5599
57 943 701 551 346 165 46 7 9 78 341 663 935 4784
55 881 645 489 290 123 26 3 4 54 285 603 873 4275
50 726 504 336 164 47 4 0 0 16 160 453 718 3129
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