SAN GABRIEL FIRE DEP, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(047785) SAN GABRIEL FIRE DEPT
From Year=1939 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 77 90 138 222 330 446 617 640 564 405 185 77 3790
57 49 58 95 169 269 386 555 578 504 343 136 46 3189
60 21 27 48 103 182 296 462 485 414 253 76 18 2385
65 3 5 10 35 71 156 307 330 266 122 20 1 1325
70 0 0 1 8 18 53 155 177 133 42 3 0 591
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