SANTA BARBARA, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(047902) SANTA BARBARA
From Year=1893 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	432	428	511	563	639	701	825	852	798	727	567	462	7503
40 S	432	859	1370	1934	2572	3273	4098	4950	5747	6474	7041	7503	7503
45 M	279	287	356	413	484	551	670	697	648	572	417	308	5681
45 S	279	566	922	1335	1819	2370	3039	3736	4384	4956	5373	5681	5681
50 M	139	153	204	264	329	401	515	542	498	417	268	162	3891
50 S	139	292	497	760	1089	1490	2005	2546	3044	3461	3729	3891	3891
55 M	43	53	80	124	176	251	360	387	348	263	131	55	2270
55 S	43	97	177	301	477	728	1087	1474	1822	2085	2215	2270	2270
60 M	8	12	19	38	57	108	205	232	199	120	40	10	1046
60 S	8	20	39	77	134	242	447	679	877	997	1036	1046	1046

Corn Growing Degree Days
50 M	236	227	270	301	346	403	512	540	493	427	327	260	4343
50 S	236	464	734	1035	1381	1784	2297	2837	3330	3757	4084	4343	4343

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