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Period of Record General Climate Summary - Growing Degree Days

Station:(313565) GRANDFATHER MOUNTAIN
From Year=1955 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	19	24	90	226	429	599	719	700	513	271	108	41	3740
40 S	19	43	134	360	789	1388	2107	2807	3320	3591	3699	3740	3740
45 M	4	5	39	130	287	449	564	545	366	153	45	12	2600
45 S	4	10	49	179	465	914	1479	2023	2389	2543	2588	2600	2600
50 M	0	1	13	61	161	303	409	390	227	65	12	2	1644
50 S	0	1	14	75	237	539	949	1338	1565	1631	1642	1644	1644
55 M	0	0	2	20	67	165	256	237	110	17	1	0	877
55 S	0	0	2	22	90	255	511	749	859	876	877	877	877
60 M	0	0	0	3	15	59	116	102	32	2	0	0	329
60 S	0	0	0	3	18	77	193	295	327	329	329	329	329

Corn Growing Degree Days
50 M	3	6	35	104	201	315	412	393	249	107	33	8	1865
50 S	3	10	44	148	348	664	1075	1468	1718	1825	1858	1865	1865

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