THE DALLES, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(358407) THE DALLES
From Year=1948 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 905 694 564 342 165 48 8 6 59 310 630 853 4584
60 750 552 409 205 71 10 1 0 16 177 480 698 3369
57 657 468 318 134 34 3 0 0 5 111 391 605 2726
55 595 411 258 94 18 1 0 0 3 76 333 543 2332
50 441 273 125 25 2 0 0 0 0 21 197 390 1474
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