LODI, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(045032) LODI
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	189	299	436	567	773	908	1047	1016	899	702	378	192	7405
40 S	189	487	924	1491	2264	3171	4218	5234	6133	6835	7213	7405	7405
45 M	82	166	283	417	618	758	892	861	749	547	234	82	5688
45 S	82	249	532	949	1567	2324	3216	4077	4826	5373	5607	5688	5688
50 M	25	65	144	270	463	608	737	706	599	392	112	24	4145
50 S	25	90	234	505	968	1575	2312	3018	3617	4009	4122	4145	4145
55 M	5	13	51	141	310	458	582	551	449	242	35	3	2841
55 S	5	18	69	210	520	978	1560	2110	2560	2802	2837	2841	2841
60 M	0	1	10	53	173	309	427	396	301	115	6	0	1791
60 S	0	1	12	65	237	547	974	1369	1670	1785	1791	1791	1791

Corn Growing Degree Days
50 M	81	160	256	348	476	559	644	629	560	443	220	88	4463
50 S	81	242	497	845	1321	1881	2524	3153	3713	4156	4375	4463	4463

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