OCCIDENTAL, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(046370) OCCIDENTAL
From Year=1943 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	260	274	391	409	580	696	758	773	737	654	395	271	6201
40 S	260	535	926	1336	1916	2612	3370	4143	4880	5535	5930	6201	6201
45 M	120	144	242	260	425	546	603	618	587	499	248	127	4420
45 S	120	263	505	766	1191	1737	2340	2959	3546	4045	4293	4420	4420
50 M	33	49	123	132	271	396	448	463	437	345	125	36	2860
50 S	33	82	206	338	609	1005	1453	1916	2354	2698	2824	2860	2860
55 M	7	12	53	54	140	250	293	308	288	204	47	5	1661
55 S	7	19	72	126	266	516	809	1117	1405	1609	1656	1661	1661
60 M	2	2	20	21	63	131	152	162	157	102	16	1	826
60 S	2	3	23	44	107	238	390	551	708	810	826	826	826

Corn Growing Degree Days
50 M	82	102	184	210	328	410	458	464	440	368	174	83	3303
50 S	82	184	368	578	906	1316	1774	2238	2678	3046	3220	3303	3303

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