TONOPAH, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(028641) TONOPAH
From Year=1951 To Year=2010
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	350	434	610	840	1150	1375	1610	1552	1295	987	578	354	11135
40 S	350	783	1393	2234	3384	4759	6369	7921	9216	10202	10781	11135	11135
45 M	206	296	455	690	995	1225	1455	1397	1145	832	429	210	9335
45 S	206	502	958	1648	2643	3869	5324	6721	7865	8697	9126	9335	9335
50 M	90	169	305	540	840	1075	1300	1242	995	677	286	91	7609
50 S	90	259	564	1104	1944	3020	4320	5562	6556	7233	7519	7609	7609
55 M	23	73	171	392	685	925	1145	1087	845	522	159	22	6050
55 S	23	96	267	658	1344	2269	3414	4501	5346	5868	6027	6050	6050
60 M	2	19	74	251	530	775	990	932	695	371	66	3	4709
60 S	2	22	95	346	877	1652	2642	3574	4269	4640	4706	4709	4709

Corn Growing Degree Days
50 M	244	293	406	531	701	808	978	955	795	624	387	254	6977
50 S	244	537	943	1474	2175	2983	3961	4916	5712	6336	6723	6977	6977

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