UKIAH, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(049122) UKIAH
From Year=1906 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 2 10 36 88 211 376 569 541 400 197 27 2 2460
57 1 4 20 59 163 318 507 479 341 148 14 0 2054
60 0 1 7 29 103 234 414 386 255 87 4 0 1520
65 0 0 0 6 38 119 263 235 131 28 0 0 819
70 0 0 0 1 10 48 131 107 49 6 0 0 351
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