SILVERTON, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(357823) SILVERTON
From Year=1962 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
65 778 621 578 456 300 151 48 40 117 360 591 783 4824
60 623 480 423 310 169 56 7 4 38 216 441 628 3395
57 530 395 331 227 103 22 1 0 13 141 352 535 2651
55 468 339 271 176 67 9 0 0 6 98 294 474 2202
50 318 204 136 69 13 0 0 0 0 29 162 323 1255
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