PASADENA, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(046719) PASADENA
From Year=1927 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 72 88 130 208 304 417 605 631 554 393 185 79 3667
57 47 59 90 159 245 357 543 569 494 332 138 50 3082
60 22 30 47 98 164 269 450 476 404 243 80 22 2304
65 4 7 11 35 65 137 295 321 257 120 25 3 1279
70 0 1 2 9 18 48 147 171 133 45 4 0 579
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 Jul 28, 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