RED ROCK 6 SSW, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(027058) RED ROCK 6 SSW
From Year=1893 To Year=1973
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	291	462	582	763	996	1283	1550	1479	1305	976	589	349	10623
40 S	291	752	1334	2097	3093	4376	5926	7405	8710	9686	10275	10623	10623
45 M	159	321	428	613	841	1133	1395	1324	1155	821	441	205	8836
45 S	159	480	908	1521	2362	3494	4890	6213	7368	8190	8630	8836	8836
50 M	70	186	278	463	686	983	1240	1169	1005	666	298	94	7138
50 S	70	256	533	997	1682	2665	3905	5074	6079	6746	7044	7138	7138
55 M	23	74	147	316	531	833	1085	1014	855	512	170	28	5588
55 S	23	98	245	560	1091	1923	3009	4022	4877	5390	5560	5588	5588
60 M	6	19	52	178	377	683	930	859	705	362	72	5	4248
60 S	6	26	78	256	632	1315	2245	3104	3809	4171	4243	4248	4248

Corn Growing Degree Days
50 M	214	323	400	502	617	744	967	940	831	629	402	245	6814
50 S	214	537	937	1439	2055	2799	3767	4707	5538	6167	6569	6814	6814

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