SALEM WSO AIRPORT, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(357500) SALEM WSO AIRPORT
From Year=1892 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
65 785 629 585 439 287 135 37 34 124 363 592 752 4760
60 630 488 430 292 154 43 4 3 40 216 442 597 3339
57 537 403 338 209 89 15 1 0 15 138 353 504 2602
55 475 347 277 158 56 6 0 0 7 96 295 442 2160
50 325 212 140 57 9 0 0 0 1 28 163 293 1228
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