SAN MARCOS RCH, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(047861) SAN MARCOS RANCH
From Year=1952 To Year=1960
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 13 28 41 96 182 299 501 447 392 225 90 31 2345
57 7 17 23 62 133 241 439 385 333 172 60 18 1890
60 2 6 8 29 74 162 347 293 246 105 29 6 1304
65 0 1 0 6 18 63 197 149 120 34 6 0 594
70 0 0 0 0 3 19 78 45 39 9 0 0 193
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