BIG BEAR LAKE DAM, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(040742) BIG BEAR LAKE DAM
From Year=1914 To Year=1971
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1118	973	951	713	515	276	110	128	291	579	830	1013	7497
60	963	831	796	563	360	147	31	38	158	424	680	858	5852
57	870	747	703	473	271	90	11	16	98	332	590	765	4966
55	808	690	641	414	217	61	5	8	67	272	530	703	4416
50	653	549	487	272	106	20	0	1	20	145	381	548	3182

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