HAYFIELD PUMP PLT, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(043855) HAYFIELD RESERVOIR
From Year=1933 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
65 398 268 176 60 9 0 0 0 0 21 172 379 1483
60 251 147 79 20 2 0 0 0 0 6 76 232 813
57 173 91 42 8 0 0 0 0 0 2 40 155 511
55 128 61 25 4 0 0 0 0 0 1 24 111 355
50 48 18 5 0 0 0 0 0 0 0 5 38 114
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