LAKE CLE ELUM, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(454394) LAKE CLE ELUM
From Year=1908 To Year=1977
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1195 967 902 660 454 252 103 104 270 578 876 1082 7441
60 1040 825 747 510 307 134 36 36 150 424 726 927 5862
57 947 741 654 421 225 80 15 15 94 333 636 834 4995
55 885 684 592 363 177 52 7 7 65 276 576 772 4455
50 730 543 437 223 78 11 1 0 19 147 426 617 3233
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