COPPER MINE TRADING, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(022099) COPPER MINE TRADING POS
From Year=1939 To Year=1976
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	12	43	150	333	623	879	1092	1019	768	426	103	15	5462
40 S	12	55	205	537	1160	2039	3130	4150	4917	5343	5447	5462	5462
45 M	2	12	68	203	470	729	937	864	618	284	38	2	4226
45 S	2	14	81	284	754	1483	2420	3284	3902	4186	4224	4226	4226
50 M	0	1	22	102	325	579	782	709	469	161	8	0	3158
50 S	0	2	23	125	451	1030	1811	2521	2989	3150	3158	3158	3158
55 M	0	0	5	37	195	430	627	554	322	70	0	0	2240
55 S	0	0	5	42	237	667	1294	1848	2170	2240	2240	2240	2240
60 M	0	0	1	9	91	287	472	400	187	18	0	0	1464
60 S	0	0	1	9	101	388	860	1259	1446	1464	1464	1464	1464

Corn Growing Degree Days
50 M	13	41	119	234	407	563	698	665	489	278	82	17	3607
50 S	13	54	174	408	815	1378	2076	2741	3230	3508	3590	3607	3607

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