POMEROY, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(456610) POMEROY
From Year=1891 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 1009 793 692 475 291 118 26 34 153 428 744 960 5722
60 854 652 537 332 167 45 5 8 70 283 595 805 4353
57 761 568 445 251 108 20 1 2 38 207 505 712 3618
55 699 511 385 202 76 11 0 1 24 161 446 650 3165
50 544 373 243 97 23 1 0 0 5 72 304 497 2161
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