PETERSONS RANCH, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(451760) PETERSONS RANCH
From Year=1953 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
65 837 679 649 500 328 172 69 68 144 370 628 822 5265
60 682 538 494 354 199 77 19 16 59 227 478 667 3808
57 589 453 402 271 133 37 6 4 27 152 388 574 3036
55 527 396 342 219 96 19 2 2 14 109 329 512 2566
50 372 257 200 108 29 2 0 0 1 33 189 357 1549
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