GREER, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(023683) GREER
From Year=1904 To Year=2011
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	2	5	28	104	293	531	665	604	434	196	41	3	2907
40 S	2	7	35	139	432	963	1628	2233	2667	2863	2904	2907	2907
45 M	0	1	5	30	157	382	510	449	286	85	6	0	1912
45 S	0	1	5	36	192	574	1084	1534	1820	1905	1912	1912	1912
50 M	0	0	0	4	58	236	356	294	147	20	0	0	1116
50 S	0	0	0	4	62	298	654	949	1096	1116	1116	1116	1116
55 M	0	0	0	0	11	110	203	142	42	1	0	0	509
55 S	0	0	0	0	11	121	324	466	508	509	509	509	509
60 M	0	0	0	0	1	32	67	29	3	0	0	0	132
60 S	0	0	0	0	1	33	100	129	132	132	132	132	132

Corn Growing Degree Days
50 M	7	11	43	113	237	370	402	354	272	164	58	12	2043
50 S	7	18	61	174	411	781	1183	1536	1808	1973	2031	2043	2043

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