OJAI, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(046399) OJAI
From Year=1948 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	362	388	479	577	702	815	1013	1026	924	766	523	378	7953
40 S	362	750	1230	1806	2509	3323	4336	5362	6286	7052	7575	7953	7953
45 M	216	249	325	427	547	665	858	871	774	611	373	230	6146
45 S	216	465	790	1217	1764	2429	3287	4158	4932	5543	5916	6146	6146
50 M	98	125	181	280	392	515	703	716	624	456	229	106	4425
50 S	98	223	404	684	1076	1591	2294	3010	3634	4090	4319	4425	4425
55 M	30	45	73	148	240	365	548	561	474	303	110	31	2927
55 S	30	75	147	296	536	901	1449	2010	2484	2787	2896	2927	2927
60 M	5	10	19	58	111	220	393	406	325	164	36	4	1752
60 S	5	15	34	92	204	424	817	1223	1547	1711	1748	1752	1752

Corn Growing Degree Days
50 M	259	263	315	364	428	497	626	631	561	480	355	275	5054
50 S	259	522	837	1201	1629	2126	2752	3383	3944	4424	4779	5054	5054

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 Jul 28, 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