ARIZONA SONORA DST M, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(028805) TUCSON MOUNTAIN PARK
From Year=1943 To Year=1954
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	357	440	578	828	1077	1293	1425	1404	1284	1042	623	465	10816
40 S	357	796	1375	2202	3279	4572	5997	7402	8686	9728	10351	10816	10816
45 M	226	303	424	678	922	1143	1270	1249	1134	887	473	317	9028
45 S	226	529	954	1631	2553	3696	4966	6216	7350	8237	8710	9028	9028
50 M	119	181	281	529	767	993	1115	1094	984	732	331	186	7314
50 S	119	301	582	1111	1878	2871	3986	5080	6064	6797	7128	7314	7314
55 M	51	86	157	384	612	843	960	939	834	578	210	90	5745
55 S	51	137	294	678	1290	2133	3093	4033	4867	5445	5655	5745	5745
60 M	15	28	66	249	458	693	805	784	684	426	114	35	4358
60 S	15	43	109	358	817	1509	2315	3099	3783	4210	4324	4358	4358

Corn Growing Degree Days
50 M	207	277	356	529	691	801	920	907	835	682	389	272	6865
50 S	207	484	841	1370	2061	2861	3781	4688	5523	6205	6593	6865	6865

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