TEMPE A S U, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(028499) TEMPE A S U
From Year=1953 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	413	462	657	840	1122	1344	1566	1521	1310	1012	601	403	11249
40 S	413	875	1532	2371	3493	4837	6403	7924	9234	10245	10847	11249	11249
45 M	265	324	502	690	967	1194	1411	1366	1160	857	453	255	9442
45 S	265	589	1091	1781	2747	3941	5352	6718	7878	8735	9187	9442	9442
50 M	137	195	351	540	812	1044	1256	1211	1010	702	309	128	7694
50 S	137	332	684	1223	2035	3079	4335	5546	6556	7258	7566	7694	7694
55 M	50	93	214	393	657	894	1101	1056	860	548	180	42	6087
55 S	50	143	357	750	1406	2300	3401	4457	5317	5865	6045	6087	6087
60 M	12	30	105	254	503	744	946	901	710	397	82	7	4690
60 S	12	42	147	401	904	1648	2594	3495	4205	4602	4684	4690	4690

Corn Growing Degree Days
50 M	280	313	431	537	684	785	954	937	803	634	400	279	7037
50 S	280	592	1023	1560	2244	3030	3984	4921	5723	6358	6758	7037	7037

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