BOUNDARY DAM, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(450844) BOUNDARY DAM
From Year=1965 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 1240 1005 874 603 386 196 64 64 251 626 936 1215 7461
60 1085 864 719 453 243 90 17 18 132 472 786 1060 5939
57 992 779 626 365 166 46 5 6 80 380 696 967 5109
55 930 723 564 308 122 26 2 2 53 320 636 905 4592
50 775 582 409 175 41 4 0 0 13 183 486 750 3419
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