PINETOP, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(026597) PINETOP
From Year=1980 To Year=1997
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	9	32	83	218	431	685	842	787	608	337	88	18	4137
40 S	9	41	124	342	773	1458	2300	3087	3695	4032	4119	4137	4137
45 M	0	5	21	105	282	535	687	632	458	200	25	1	2951
45 S	0	5	26	131	413	948	1635	2267	2725	2925	2950	2951	2951
50 M	0	0	3	33	150	386	532	477	309	87	2	0	1978
50 S	0	0	3	36	186	572	1104	1581	1890	1976	1978	1978	1978
55 M	0	0	0	4	56	241	377	322	167	21	0	0	1188
55 S	0	0	0	4	61	301	679	1000	1167	1188	1188	1188	1188
60 M	0	0	0	0	11	113	223	169	57	2	0	0	576
60 S	0	0	0	0	12	125	348	517	574	576	576	576	576

Corn Growing Degree Days
50 M	26	50	94	192	314	460	535	488	385	252	92	37	2926
50 S	26	76	170	362	677	1137	1671	2159	2544	2797	2889	2926	2926

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