SANTA BARBARA FAA ARPT, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(047905) SANTA BARBARA FAA ARPT
From Year=1941 To Year=2005
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	371	386	471	522	610	672	787	812	759	673	500	389	6954
40 S	371	757	1229	1751	2361	3034	3821	4632	5392	6065	6564	6954	6954
45 M	219	246	316	372	455	522	632	657	609	518	350	237	5133
45 S	219	465	781	1153	1608	2131	2763	3419	4029	4547	4897	5133	5133
50 M	90	115	165	223	300	372	477	502	459	363	202	101	3370
50 S	90	205	370	593	893	1266	1743	2244	2704	3067	3269	3370	3370
55 M	20	32	51	89	147	223	322	347	309	210	79	22	1851
55 S	20	52	103	192	340	562	884	1231	1540	1750	1829	1851	1851
60 M	2	4	9	22	37	82	168	192	161	79	17	2	776
60 S	2	6	15	37	75	157	324	516	677	756	773	776	776

Corn Growing Degree Days
50 M	218	209	246	272	324	377	476	501	459	388	296	234	4000
50 S	218	427	673	946	1270	1647	2122	2623	3082	3470	3766	4000	4000

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 Apr 5, 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