BERKELEY, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(040693) BERKELEY
From Year=1893 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 487 363 351 282 216 131 107 99 88 146 285 458 3012
60 332 224 204 144 84 30 15 12 12 42 147 303 1548
57 241 146 125 75 29 5 1 1 1 12 79 213 928
55 183 100 81 40 10 1 0 0 0 4 46 157 622
50 66 25 15 4 0 0 0 0 0 0 7 51 168
Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. 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