LAKE ARROWHEAD, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(044671) LAKE ARROWHEAD
From Year=1941 To Year=2011
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 0 0 1 18 83 234 440 423 275 73 2 0 1549
57 0 0 0 9 55 185 378 362 222 47 1 0 1260
60 0 0 0 3 25 122 287 272 150 22 0 0 880
65 0 0 0 0 5 46 146 136 58 3 0 0 395
70 0 0 0 0 1 10 45 39 12 0 0 0 108
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 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