APACHE JUNCTION, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(020306) APACHE JUNCTION
From Year=1962 To Year=1979
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	389	476	627	793	1124	1392	1603	1511	1308	1037	646	450	11357
40 S	389	865	1492	2285	3409	4801	6404	7915	9224	10261	10906	11357	11357
45 M	245	337	473	643	969	1242	1448	1356	1158	882	496	302	9553
45 S	245	583	1055	1698	2668	3909	5358	6714	7872	8754	9250	9553	9553
50 M	123	209	324	494	814	1092	1293	1201	1008	727	351	168	7803
50 S	123	332	655	1149	1963	3055	4348	5549	6558	7285	7635	7803	7803
55 M	44	106	193	348	659	942	1138	1046	858	574	217	64	6191
55 S	44	150	343	691	1350	2292	3430	4476	5335	5909	6126	6191	6191
60 M	12	37	96	215	506	792	983	891	708	425	112	13	4789
60 S	12	49	144	359	865	1657	2640	3531	4240	4665	4776	4789	4789

Corn Growing Degree Days
50 M	227	288	386	508	706	849	1001	952	836	673	396	261	7083
50 S	227	515	901	1409	2115	2963	3965	4916	5752	6425	6821	7083	7083

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