VISALIA, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(049367) VISALIA
From Year=1927 To Year=2005
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	208	328	508	657	887	1066	1266	1217	1028	799	433	217	8615
40 S	208	536	1045	1702	2589	3655	4922	6139	7166	7965	8398	8615	8615
45 M	94	194	354	508	732	916	1111	1062	878	644	285	100	6879
45 S	94	288	643	1150	1882	2798	3909	4971	5849	6493	6779	6879	6879
50 M	31	86	209	359	577	766	956	907	728	489	156	33	5297
50 S	31	116	326	685	1262	2028	2984	3891	4619	5108	5264	5297	5297
55 M	6	24	95	222	423	616	801	752	578	337	64	7	3926
55 S	6	30	125	347	770	1386	2188	2939	3517	3855	3919	3926	3926
60 M	0	3	28	113	277	466	646	597	428	198	18	1	2776
60 S	0	4	32	145	421	887	1534	2131	2559	2757	2775	2776	2776

Corn Growing Degree Days
50 M	103	178	291	395	552	668	782	751	647	497	253	112	5229
50 S	103	281	572	967	1519	2187	2968	3719	4366	4864	5117	5229	5229

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 Apr 5, 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