ELMA, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(452531) ELMA
From Year=1896 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
65 781 633 615 463 312 180 85 75 159 392 615 759 5070
60 626 491 460 316 176 70 17 13 57 242 465 604 3538
57 533 407 367 232 108 28 4 3 23 161 375 511 2751
55 471 350 306 181 71 12 1 1 11 115 316 449 2284
50 317 212 164 72 16 1 0 0 1 35 178 297 1293
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