EL CAPITAN DAM, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(042709) EL CAPITAN DAM
From Year=1948 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	462	467	543	642	766	904	1099	1126	1038	889	645	495	9076
40 S	462	929	1472	2114	2880	3784	4883	6010	7048	7936	8581	9076	9076
45 M	309	327	388	492	611	754	944	971	888	734	495	342	7255
45 S	309	636	1025	1517	2128	2882	3826	4797	5685	6418	6914	7255	7255
50 M	171	193	239	343	456	604	789	816	738	579	347	199	5474
50 S	171	365	603	947	1403	2007	2796	3612	4350	4929	5275	5474	5474
55 M	70	87	113	206	303	454	634	661	588	424	207	86	3834
55 S	70	157	270	476	779	1233	1867	2529	3117	3541	3748	3834	3834
60 M	20	28	37	98	164	306	479	506	438	274	97	25	2472
60 S	20	48	85	183	347	653	1132	1638	2076	2350	2447	2472	2472

Corn Growing Degree Days
50 M	290	289	322	385	463	556	678	697	638	547	400	315	5581
50 S	290	579	901	1286	1750	2306	2984	3681	4320	4866	5267	5581	5581

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