MOLALLA 1 NW, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(355677) MOLALLA 1 NW
From Year=1935 To Year=1976
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 792 615 610 464 299 150 51 48 126 374 581 738 4847
60 637 474 455 315 162 52 5 6 39 226 432 583 3384
57 544 389 362 229 94 19 1 1 14 149 342 490 2633
55 482 334 301 175 59 8 0 0 7 105 284 429 2183
50 334 201 158 64 11 1 0 0 0 33 154 281 1237
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