RUBY 4 NW, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(027326) RUBY 4 NW
From Year=1895 To Year=1955
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	256	273	442	606	886	1096	1220	1143	1018	779	493	329	8541
40 S	256	529	972	1578	2463	3560	4780	5923	6941	7719	8212	8541	8541
45 M	136	153	292	457	731	946	1065	988	868	624	347	194	6801
45 S	136	290	582	1039	1769	2716	3781	4769	5637	6260	6607	6801	6801
50 M	54	68	160	313	576	796	910	833	718	469	212	90	5199
50 S	54	121	282	595	1171	1968	2878	3711	4429	4898	5110	5199	5199
55 M	12	19	67	186	423	647	755	678	568	320	101	30	3805
55 S	12	31	97	283	706	1353	2108	2786	3354	3674	3774	3805	3805
60 M	1	2	20	87	277	498	600	523	418	185	31	6	2646
60 S	1	3	23	110	386	884	1484	2007	2425	2610	2641	2646	2646

Corn Growing Degree Days
50 M	162	177	286	391	574	705	814	777	689	499	306	209	5589
50 S	162	339	626	1017	1591	2296	3110	3886	4575	5074	5380	5589	5589

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