PETERSONS RANCH, WASHINGTON

Period of Record General Climate Summary - Cooling Degree Days

Station:(451760) PETERSONS RANCH
From Year=1953 To Year=2012
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 0 0 2 20 92 188 347 343 214 52 1 0 1259
57 0 0 1 11 67 146 289 284 167 33 0 0 998
60 0 0 0 4 39 96 208 203 110 14 0 0 675
65 0 0 0 1 14 40 104 99 44 3 0 0 305
70 0 0 0 0 3 12 41 38 11 0 0 0 106
Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. 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