SAN DIEGO LINDBERGH FLD, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(047740) SAN DIEGO WSO AIRPORT
From Year=1914 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
65 267 216 194 128 71 22 1 0 3 30 123 242 1299
60 127 91 65 27 6 0 0 0 0 2 30 104 453
57 62 38 20 6 1 0 0 0 0 0 8 45 181
55 33 17 7 2 0 0 0 0 0 0 3 21 83
50 4 1 0 0 0 0 0 0 0 0 0 2 7
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