LA MESA, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(044735) LA MESA
From Year=1899 To Year=2006
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 71 82 109 183 274 367 529 569 510 376 186 90 3345
57 44 52 71 133 213 307 467 507 450 315 136 56 2750
60 18 23 32 74 131 218 374 414 360 226 76 23 1968
65 3 5 6 21 39 89 219 259 214 100 21 3 978
70 0 0 1 4 7 22 85 115 96 33 4 0 368
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