HEALDSBURG, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(043875) HEALDSBURG
From Year=1931 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 5 19 55 124 266 403 490 477 411 247 52 6 2556
57 2 8 32 85 209 344 428 415 351 191 31 2 2098
60 1 2 12 43 134 256 335 322 262 118 12 0 1498
65 0 0 2 11 52 128 184 172 128 39 2 0 717
70 0 0 0 1 16 50 67 58 45 9 0 0 246
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