SAPPHO 8 E, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(457319) SAPPHO 8 E
From Year=1948 To Year=1997
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 830 693 693 562 408 255 151 142 215 451 677 828 5907
60 675 552 538 413 264 129 51 43 99 298 527 673 4263
57 582 468 445 324 186 69 18 12 49 212 437 580 3382
55 520 411 384 267 139 39 6 4 26 160 377 518 2852
50 365 272 233 137 48 4 0 0 3 58 231 364 1715
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 Jul 28, 2006
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