SANTA ROSA, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(047965) SANTA ROSA
From Year=1931 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 14 37 78 171 300 372 377 347 217 43 6 1967
57 2 6 19 49 121 241 310 315 287 163 24 2 1539
60 0 1 6 22 64 159 218 222 200 95 8 0 996
65 0 0 1 4 19 63 86 87 82 28 1 0 372
70 0 0 0 1 5 21 23 21 25 5 0 0 100
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