GOLD ROCK RCH, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(043489) GOLD ROCK RANCH
From Year=1964 To Year=1996
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	527	593	757	932	1191	1430	1653	1627	1408	1130	731	514	12494
40 S	527	1120	1878	2810	4001	5431	7084	8711	10119	11250	11980	12494	12494
45 M	374	452	602	782	1036	1280	1498	1472	1258	975	581	362	10673
45 S	374	826	1428	2210	3246	4526	6024	7496	8755	9730	10311	10673	10673
50 M	227	313	448	632	881	1130	1343	1317	1108	820	431	218	8869
50 S	227	540	988	1620	2501	3631	4974	6291	7400	8220	8651	8869	8869
55 M	108	185	297	482	726	980	1188	1162	958	665	286	98	7137
55 S	108	294	591	1073	1799	2779	3967	5129	6088	6753	7040	7137	7137
60 M	34	85	166	337	572	830	1033	1007	808	511	161	27	5571
60 S	34	119	285	622	1193	2024	3056	4064	4872	5383	5544	5571	5571

Corn Growing Degree Days
50 M	293	358	470	589	747	872	1019	1015	891	736	451	284	7723
50 S	293	651	1121	1710	2457	3328	4347	5362	6253	6988	7439	7723	7723

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