MT VERNON 3 WNW, WASHINGTON

Period of Record General Climate Summary - Cooling Degree Days

Station:(455678) MOUNT VERNON 3 WNW
From Year=1956 To Year=2005
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 1 4 44 119 215 228 102 16 2 0 732
57 0 0 0 2 25 74 155 168 62 7 1 0 493
60 0 0 0 0 9 29 79 88 23 1 0 0 230
65 0 0 0 0 1 4 15 15 2 0 0 0 37
70 0 0 0 0 0 0 1 1 0 0 0 0 3
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