MAMMOTH LAKES RANGER STN, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(045280) MAMMOTH LAKES RANGER STN
From Year=1993 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 1137 1060 997 839 569 301 105 137 321 643 896 1131 8135
60 982 919 842 689 416 170 27 40 181 488 746 976 6476
57 889 834 749 600 327 113 9 15 112 396 656 883 5582
55 827 777 687 540 271 83 3 8 79 336 596 821 5028
50 672 636 532 393 155 35 0 2 31 199 446 666 3768
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