STONY GORGE RESERVOIR, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(048587) STONY GORGE RESERVOIR
From Year=1948 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	148	226	341	481	747	970	1190	1139	957	701	335	166	7401
40 S	148	374	715	1196	1943	2913	4103	5242	6198	6899	7234	7401	7401
45 M	54	109	197	333	592	820	1035	984	807	546	198	62	5737
45 S	54	163	360	693	1285	2105	3140	4124	4930	5477	5675	5737	5737
50 M	11	35	86	199	438	670	880	829	657	393	92	14	4303
50 S	11	46	132	331	769	1439	2319	3148	3804	4197	4289	4303	4303
55 M	1	6	25	96	293	520	725	674	507	248	29	2	3126
55 S	1	7	32	128	421	941	1666	2340	2847	3095	3124	3126	3126
60 M	0	0	4	33	170	374	570	519	359	129	5	0	2163
60 S	0	0	4	37	207	581	1151	1670	2029	2158	2163	2163	2163

Corn Growing Degree Days
50 M	91	136	210	305	465	596	717	689	582	442	213	105	4550
50 S	91	227	437	742	1207	1802	2520	3209	3791	4233	4445	4550	4550

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