PAYSON RS, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(026320) PAYSON RANGER STN
From Year=1893 To Year=1974
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	33	55	138	297	531	768	1026	976	762	456	142	38	5222
40 S	33	88	227	523	1055	1823	2849	3825	4587	5043	5184	5222	5222
45 M	5	12	53	166	378	618	872	821	612	305	53	6	3899
45 S	5	17	70	235	613	1231	2103	2924	3536	3841	3893	3899	3899
50 M	0	1	13	68	231	468	717	666	462	168	11	1	2807
50 S	0	2	15	83	314	783	1499	2166	2627	2795	2806	2807	2807
55 M	0	0	1	18	107	321	562	511	314	64	1	0	1899
55 S	0	0	1	20	126	447	1009	1520	1834	1898	1899	1899	1899
60 M	0	0	0	3	30	185	407	357	175	13	0	0	1169
60 S	0	0	0	3	32	217	624	981	1156	1169	1169	1169	1169

Corn Growing Degree Days
50 M	82	100	172	281	427	521	644	628	506	367	187	99	4014
50 S	82	181	353	634	1061	1582	2226	2854	3360	3728	3915	4014	4014

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