SAN FRAN MISSION DOLORE, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(047772) SAN FRAN MISSION DOLORE
From Year=1914 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 11 31 59 71 93 138 148 173 231 212 91 18 1278
57 4 15 35 44 57 89 93 116 173 155 55 7 843
60 1 5 14 20 27 42 39 51 99 86 22 1 407
65 0 0 3 5 8 13 8 10 33 27 3 0 111
70 0 0 0 1 2 4 2 2 11 7 0 0 30
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 Apr 5, 2006
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