TEMPE 3 S, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(028494) TEMPE 3 S
From Year=1905 To Year=1952
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	269	359	544	749	1020	1242	1487	1446	1219	882	500	292	10009
40 S	269	628	1172	1921	2941	4183	5670	7117	8336	9218	9717	10009	10009
45 M	139	224	390	599	865	1092	1332	1291	1069	727	352	156	8236
45 S	139	363	753	1352	2217	3309	4641	5933	7002	7729	8080	8236	8236
50 M	50	109	244	450	710	942	1177	1136	919	572	213	58	6581
50 S	50	159	403	853	1563	2505	3682	4818	5738	6310	6523	6581	6581
55 M	10	35	122	305	555	792	1022	981	769	419	101	12	5124
55 S	10	45	167	472	1027	1820	2841	3823	4592	5011	5112	5124	5124
60 M	1	7	42	176	402	642	867	826	619	273	33	1	3890
60 S	1	7	50	226	628	1270	2137	2963	3583	3856	3889	3890	3890

Corn Growing Degree Days
50 M	207	253	370	478	604	704	898	891	746	560	350	217	6277
50 S	207	459	829	1307	1911	2615	3514	4404	5150	5710	6060	6277	6277

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