CLE ELUM, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(451504) CLE ELUM
From Year=1899 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 1169 935 816 593 392 203 68 80 251 559 862 1103 7030
60 1014 794 661 444 248 96 18 23 132 405 712 948 5494
57 921 710 568 356 172 51 6 8 79 315 622 855 4661
55 859 653 506 298 127 30 2 3 52 258 562 793 4144
50 704 512 353 165 45 4 0 0 13 134 413 638 2982
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