ROSS DAM, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(457185) ROSS DAM
From Year=1960 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
65 987 811 771 564 363 194 80 64 185 483 766 957 6225
60 832 670 616 415 225 92 25 17 86 330 616 802 4726
57 739 585 523 327 153 48 9 5 45 244 526 709 3914
55 677 528 461 271 112 26 4 2 26 191 466 647 3411
50 522 387 307 144 38 2 0 0 4 81 317 492 2294
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