EL CAPITAN DAM, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(042709) EL CAPITAN DAM
From Year=1948 To Year=2006
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	469	545	644	767	905	1101	1126	1038	889	645	497	9088
40 S	462	931	1476	2120	2886	3792	4893	6019	7057	7946	8591	9088	9088
45 M	309	328	390	494	612	755	946	971	888	734	495	344	7267
45 S	309	638	1028	1522	2134	2889	3835	4806	5694	6428	6923	7267	7267
50 M	171	195	240	345	457	605	791	816	738	579	347	200	5485
50 S	171	366	607	952	1408	2014	2805	3621	4359	4938	5284	5485	5485
55 M	70	88	114	207	304	455	636	661	588	424	207	87	3843
55 S	70	158	273	480	784	1239	1875	2536	3124	3549	3756	3843	3843
60 M	20	28	38	99	165	307	481	506	438	274	97	26	2479
60 S	20	48	86	185	350	657	1138	1644	2082	2356	2453	2479	2479

Corn Growing Degree Days
50 M	290	289	321	385	463	557	680	697	638	547	400	315	5581
50 S	290	579	900	1285	1747	2304	2984	3681	4319	4866	5266	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 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