GEM LAKE, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(043369) GEM LAKE
From Year=1924 To Year=2009
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1210 1084 1043 835 625 384 167 184 379 654 886 1123 8575
60 1055 943 888 685 471 248 65 72 235 499 736 968 6865
57 962 858 795 595 380 178 29 35 162 406 646 875 5921
55 900 801 733 536 321 137 16 20 122 345 586 813 5330
50 745 660 578 387 187 62 3 3 52 208 436 658 3981
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