BUTTONWILLOW, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(041244) BUTTONWILLOW
From Year=1940 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	195	315	498	647	912	1087	1298	1241	1043	778	399	194	8607
40 S	195	510	1007	1654	2567	3654	4952	6193	7236	8015	8413	8607	8607
45 M	88	183	344	497	757	937	1143	1086	893	623	255	87	6894
45 S	88	271	615	1112	1869	2807	3950	5035	5929	6552	6807	6894	6894
50 M	30	81	201	349	602	787	988	931	743	469	135	28	5345
50 S	30	111	312	661	1264	2051	3039	3970	4713	5182	5317	5345	5345
55 M	7	23	90	213	448	637	833	776	593	318	53	6	3997
55 S	7	30	120	333	781	1418	2251	3027	3620	3938	3992	3997	3997
60 M	1	3	27	106	300	488	678	621	444	183	14	1	2865
60 S	1	4	32	138	438	925	1604	2224	2668	2850	2864	2865	2865

Corn Growing Degree Days
50 M	115	189	301	397	568	677	795	763	646	494	264	125	5334
50 S	115	304	605	1003	1570	2247	3042	3805	4451	4946	5209	5334	5334

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