ELK VALLEY, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(042749) ELK VALLEY
From Year=1948 To Year=1976
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	45	75	121	254	454	632	812	767	601	346	133	59	4300
40 S	45	121	242	496	950	1582	2393	3161	3761	4108	4240	4300	4300
45 M	12	22	39	132	305	482	657	612	451	203	48	17	2979
45 S	12	33	73	204	510	992	1648	2261	2712	2915	2963	2979	2979
50 M	1	4	8	48	173	334	502	457	304	89	10	3	1933
50 S	1	5	13	62	234	569	1071	1528	1831	1920	1930	1933	1933
55 M	0	0	1	11	75	198	349	304	168	24	1	0	1130
55 S	0	0	1	12	87	285	634	937	1105	1129	1130	1130	1130
60 M	0	0	0	1	23	94	204	163	65	3	0	0	552
60 S	0	0	0	1	23	117	321	484	548	552	552	552	552

Corn Growing Degree Days
50 M	14	42	89	193	314	409	519	500	415	228	59	16	2798
50 S	14	56	145	338	652	1061	1580	2080	2495	2724	2782	2798	2798

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 Jul 28, 2006
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