ANACAPA ISLAND, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(040188) ANACAPA ISLAND
From Year=1948 To Year=2000
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	466	445	500	526	613	682	775	788	749	705	623	497	7370
40 S	466	911	1411	1937	2550	3232	4007	4795	5544	6249	6872	7370	7370
45 M	312	303	345	376	458	532	620	633	599	550	473	342	5544
45 S	312	615	960	1336	1795	2327	2946	3580	4179	4729	5202	5544	5544
50 M	164	166	192	226	303	382	465	478	449	395	323	189	3733
50 S	164	331	523	749	1052	1434	1899	2377	2826	3221	3544	3733	3733
55 M	53	58	64	85	152	232	310	323	299	240	175	59	2051
55 S	53	112	176	261	413	645	954	1278	1577	1817	1992	2051	2051
60 M	10	12	9	17	50	94	158	170	150	96	58	9	833
60 S	10	22	31	49	99	192	350	520	671	766	824	833	833

Corn Growing Degree Days
50 M	184	184	207	233	307	382	464	478	449	394	325	198	3805
50 S	184	368	575	808	1115	1497	1961	2439	2888	3282	3606	3805	3805

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