LODI, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(045032) LODI
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	186	288	425	555	751	898	1041	998	879	682	370	189	7261
40 S	186	474	899	1455	2205	3103	4143	5141	6021	6703	7072	7261	7261
45 M	78	158	272	405	596	748	886	843	729	527	226	79	5547
45 S	78	237	509	914	1510	2257	3143	3986	4715	5242	5468	5547	5547
50 M	23	60	136	258	441	598	731	688	579	373	107	21	4015
50 S	23	83	220	478	919	1516	2247	2935	3514	3887	3994	4015	4015
55 M	4	12	46	130	288	448	576	533	429	224	32	3	2725
55 S	4	15	61	192	480	928	1503	2036	2466	2690	2722	2725	2725
60 M	0	1	8	47	154	299	421	378	281	102	5	0	1697
60 S	0	1	9	56	210	510	930	1308	1589	1692	1696	1697	1697

Corn Growing Degree Days
50 M	78	151	247	339	462	554	638	617	547	431	221	85	4371
50 S	78	229	476	815	1277	1831	2469	3087	3634	4065	4286	4371	4371

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