CONNELL 1 W, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(451690) CONNELL 1 W
From Year=1960 To Year=2003
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1047 776 648 433 219 70 12 15 115 431 763 1035 5564
60 892 635 493 289 110 18 2 2 44 285 613 880 4263
57 799 550 401 209 63 6 0 0 21 206 523 787 3565
55 737 494 340 162 40 2 0 0 12 159 464 725 3134
50 582 355 198 66 8 0 0 0 2 67 320 570 2169
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