SAN LUIS DAM, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(047846) SAN LUIS DAM
From Year=1963 To Year=2005
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 4 17 80 173 359 515 708 694 559 340 68 4 3521
57 2 8 50 130 300 455 646 632 499 280 42 1 3045
60 0 1 22 78 219 366 553 539 409 197 17 0 2402
65 0 0 3 26 114 230 399 384 263 89 2 0 1510
70 0 0 0 6 50 123 252 236 136 29 0 0 832
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 Apr 5, 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