EL MIRAGE, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(042771) EL MIRAGE FIELD
From Year=1971 To Year=2010
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	133	197	341	482	754	992	1208	1167	942	646	301	124	7286
40 S	133	330	671	1153	1907	2898	4106	5274	6216	6862	7163	7286	7286
45 M	47	95	205	337	599	842	1053	1012	792	492	178	44	5695
45 S	47	142	347	684	1283	2124	3178	4190	4982	5474	5652	5695	5695
50 M	10	32	100	208	446	692	898	857	642	343	84	10	4322
50 S	10	42	142	350	796	1488	2386	3243	3885	4228	4312	4322	4322
55 M	1	6	37	108	303	542	743	702	493	208	26	1	3170
55 S	1	7	44	152	454	997	1740	2442	2935	3143	3169	3170	3170
60 M	0	0	8	44	179	395	588	547	348	101	4	0	2215
60 S	0	0	9	52	232	627	1215	1762	2110	2211	2215	2215	2215

Corn Growing Degree Days
50 M	119	154	241	330	484	606	718	699	585	429	231	122	4717
50 S	119	273	513	844	1327	1933	2651	3350	3936	4364	4595	4717	4717

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