LAKE ARROWHEAD, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(044671) LAKE ARROWHEAD
From Year=1941 To Year=2011
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 858 726 706 519 336 133 17 24 95 345 630 832 5219
60 703 584 551 372 201 58 2 5 36 208 480 677 3878
57 610 500 458 289 137 32 0 2 19 141 391 584 3162
55 548 443 397 237 104 21 0 1 11 104 332 522 2721
50 394 304 252 129 46 6 0 0 3 42 199 368 1741
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