SONORA RS, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(048353) SONORA RS
From Year=1931 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	149	190	315	448	681	881	1133	1095	904	651	319	163	6927
40 S	149	339	654	1102	1783	2664	3797	4891	5795	6446	6764	6927	6927
45 M	55	84	181	305	527	731	978	940	754	496	184	65	5299
45 S	55	139	320	625	1152	1882	2860	3800	4554	5050	5235	5299	5299
50 M	9	24	80	181	376	581	823	785	604	346	83	16	3909
50 S	9	34	114	295	671	1252	2075	2859	3464	3810	3893	3909	3909
55 M	1	4	23	87	239	433	668	630	455	209	25	2	2774
55 S	1	4	27	114	353	785	1453	2083	2538	2747	2772	2774	2774
60 M	0	0	2	29	127	291	513	475	311	101	4	0	1854
60 S	0	0	2	32	159	450	963	1438	1749	1850	1854	1854	1854

Corn Growing Degree Days
50 M	92	119	197	280	428	545	683	661	558	418	207	104	4291
50 S	92	211	408	688	1116	1661	2344	3005	3562	3980	4187	4291	4291

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