PERRIS 1 WSW, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(046818) PERRIS 1 WSW
From Year=1951 To Year=1957
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 478 368 340 204 91 19 0 1 6 59 227 417 2208
60 326 236 200 89 24 2 0 0 0 12 113 265 1268
57 241 164 129 48 7 0 0 0 0 2 68 182 842
55 187 123 92 30 3 0 0 0 0 0 47 134 615
50 79 46 31 6 0 0 0 0 0 0 14 46 221
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