BOUNDARY DAM, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(450844) BOUNDARY DAM
From Year=1965 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 1235 1006 872 594 382 192 66 65 253 620 933 1206 7423
60 1080 865 717 445 239 87 18 17 134 465 783 1051 5900
57 987 780 624 357 163 44 6 5 82 373 693 958 5072
55 925 724 562 300 119 26 2 2 55 313 633 896 4556
50 770 583 407 168 39 4 0 0 14 176 483 741 3384
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