PARKER RESERVOIR, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(046699) PARKER RESERVOIR
From Year=1943 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	425	521	751	957	1258	1496	1719	1676	1448	1138	682	440	12511
40 S	425	946	1697	2654	3912	5408	7126	8802	10250	11388	12071	12511	12511
45 M	277	381	596	807	1103	1346	1564	1521	1298	983	533	289	10696
45 S	277	658	1254	2061	3164	4510	6073	7594	8892	9875	10408	10696	10696
50 M	145	247	442	657	948	1196	1409	1366	1148	828	385	152	8922
50 S	145	392	834	1491	2439	3635	5043	6409	7557	8385	8770	8922	8922
55 M	52	130	295	508	793	1046	1254	1211	998	673	246	53	7259
55 S	52	182	477	985	1778	2824	4078	5289	6287	6960	7206	7259	7259
60 M	9	50	169	364	638	896	1099	1056	848	520	132	10	5790
60 S	9	59	228	592	1230	2126	3225	4281	5129	5649	5781	5790	5790

Corn Growing Degree Days
50 M	230	296	456	618	816	942	1083	1061	925	741	409	238	7814
50 S	230	526	982	1600	2416	3358	4441	5502	6427	7168	7577	7814	7814

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