SWAN FALLS POWER HOUSE, IDAHO

Period of Record General Climate Summary - Heating Degree Days

Station:(108928) SWAN FALLS POWER HOUSE
From Year=1935 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 1001 737 582 341 140 35 1 3 56 295 674 959 4823
60 846 596 428 210 63 9 0 0 20 171 525 804 3672
57 753 511 338 144 34 3 0 0 9 112 435 711 3051
55 691 455 280 107 21 2 0 0 5 81 377 649 2666
50 537 317 153 38 4 0 0 0 0 29 240 495 1814
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