PERKINSVILLE, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(026424) PERKINSVILLE
From Year=1962 To Year=1972
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	65	125	231	396	679	895	1204	1146	901	613	256	63	6576
40 S	65	191	422	818	1497	2392	3597	4742	5643	6257	6513	6576	6576
45 M	18	47	120	253	524	745	1049	991	751	463	128	15	5105
45 S	18	65	185	438	963	1708	2757	3748	4499	4962	5090	5105	5105
50 M	2	9	45	130	371	595	894	836	601	320	41	2	3846
50 S	2	11	55	186	557	1152	2046	2882	3483	3803	3844	3846	3846
55 M	0	0	7	44	228	445	739	681	452	182	4	0	2783
55 S	0	0	7	51	279	724	1464	2144	2596	2778	2782	2783	2783
60 M	0	0	0	6	110	297	584	526	307	74	0	0	1904
60 S	0	0	0	6	116	413	997	1523	1830	1904	1904	1904	1904

Corn Growing Degree Days
50 M	116	178	247	332	485	551	728	722	570	453	251	112	4744
50 S	116	294	540	872	1358	1908	2637	3359	3929	4381	4633	4744	4744

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