ROY, NEW MEXICO

Period of Record General Climate Summary - Growing Degree Days

Station:(297638) ROY
From Year=1905 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	32	57	142	323	595	848	990	943	710	420	136	38	5233
40 S	32	89	231	554	1150	1997	2987	3929	4639	5059	5195	5233	5233
45 M	8	18	65	197	443	698	835	788	560	279	60	10	3960
45 S	8	26	91	288	731	1429	2263	3051	3611	3890	3950	3960	3960
50 M	1	4	21	95	296	548	680	633	413	155	17	2	2864
50 S	1	5	26	122	418	966	1645	2278	2691	2846	2863	2864	2864
55 M	0	0	4	33	167	399	525	478	271	65	3	0	1944
55 S	0	0	5	37	204	603	1128	1605	1876	1942	1944	1944	1944
60 M	0	0	0	7	71	257	370	323	143	18	0	0	1190
60 S	0	0	0	7	78	335	706	1029	1172	1190	1190	1190	1190

Corn Growing Degree Days
50 M	47	72	140	243	384	538	644	611	444	291	127	51	3593
50 S	47	119	259	502	886	1424	2068	2680	3124	3414	3542	3593	3593

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