PARKER RSVR, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(046699) PARKER RESERVOIR
From Year=1934 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	425	515	755	960	1267	1498	1722	1678	1448	1129	687	444	12529
40 S	425	941	1696	2656	3923	5421	7143	8821	10270	11399	12085	12529	12529
45 M	277	376	600	810	1112	1348	1567	1523	1298	974	537	292	10715
45 S	277	653	1253	2063	3175	4523	6090	7613	8912	9886	10422	10715	10715
50 M	145	241	446	660	957	1198	1412	1368	1148	819	388	155	8939
50 S	145	386	832	1493	2450	3648	5060	6428	7576	8395	8783	8939	8939
55 M	51	124	299	511	802	1048	1257	1213	998	664	249	56	7273
55 S	51	176	474	986	1787	2835	4092	5306	6304	6968	7217	7273	7273
60 M	9	46	172	367	647	898	1102	1058	848	511	133	11	5801
60 S	9	55	227	593	1240	2138	3240	4299	5147	5658	5791	5801	5801

Corn Growing Degree Days
50 M	230	293	460	620	819	940	1084	1061	923	735	413	240	7818
50 S	230	524	984	1603	2422	3362	4446	5507	6430	7165	7578	7818	7818

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