BIG BEAR LAKE DAM, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(040742) BIG BEAR LAKE DAM
From Year=1914 To Year=1971
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	2	5	25	114	273	478	689	660	461	219	43	9	2979
40 S	2	7	33	147	420	898	1587	2247	2707	2926	2970	2979	2979
45 M	0	1	3	44	146	332	534	505	315	105	8	1	1993
45 S	0	1	4	48	195	526	1060	1565	1880	1984	1992	1993	1993
50 M	0	0	0	9	57	198	379	351	180	31	0	0	1205
50 S	0	0	0	9	66	263	642	993	1173	1204	1205	1205	1205
55 M	0	0	0	0	12	89	229	203	77	3	0	0	613
55 S	0	0	0	0	12	102	330	533	610	613	613	613	613
60 M	0	0	0	0	0	25	100	78	18	0	0	0	222
60 S	0	0	0	0	0	26	126	204	222	222	222	222	222

Corn Growing Degree Days
50 M	13	19	46	115	215	333	444	423	323	192	70	24	2218
50 S	13	31	78	193	407	741	1185	1608	1931	2123	2194	2218	2218

M = Monthly Data
S - Running sum of monthly data.
Growing 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.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
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