N WILLAMETTE EXP STN, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(356151) N WILLAMETTE EXP STN
From Year=1963 To Year=2007
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 773 617 570 447 288 135 41 40 121 369 591 772 4765
60 618 476 415 302 160 48 6 5 41 222 441 617 3352
57 525 391 323 220 97 18 1 1 16 145 352 524 2613
55 463 335 263 169 63 8 0 0 7 101 294 462 2165
50 312 200 129 67 13 0 0 0 1 30 160 310 1223
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