MC NARY, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(025412) MC NARY 2 N
From Year=1920 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	7	15	57	173	388	629	787	726	558	306	78	13	3736
40 S	7	22	79	252	640	1269	2056	2782	3340	3646	3723	3736	3736
45 M	1	2	14	77	245	479	632	571	408	174	22	1	2625
45 S	1	2	16	93	338	818	1449	2020	2428	2602	2624	2625	2625
50 M	0	0	2	21	122	332	477	416	262	71	3	0	1705
50 S	0	0	2	23	145	477	954	1369	1631	1702	1705	1705	1705
55 M	0	0	0	3	42	192	322	261	129	16	0	0	965
55 S	0	0	0	3	45	237	559	820	949	965	965	965	965
60 M	0	0	0	0	8	83	170	114	36	1	0	0	411
60 S	0	0	0	0	8	91	261	375	410	411	411	411	411

Corn Growing Degree Days
50 M	22	30	74	166	303	438	497	447	364	241	95	31	2706
50 S	22	52	126	292	594	1032	1529	1976	2340	2580	2675	2706	2706

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