GRAND JUNCTION 6 ESE, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(053489) GRAND JUNCTION 6 ESE
From Year=1962 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	5	32	187	384	689	962	1187	1108	801	447	106	6	5914
40 S	5	37	223	608	1297	2259	3446	4553	5355	5802	5908	5914	5914
45 M	0	8	94	254	536	812	1032	953	652	305	43	1	4688
45 S	0	8	102	356	892	1703	2735	3688	4340	4645	4687	4688	4688
50 M	0	1	39	148	388	662	877	798	503	180	11	0	3606
50 S	0	1	40	187	575	1237	2114	2912	3415	3595	3606	3606	3606
55 M	0	0	12	71	254	513	722	643	360	85	2	0	2660
55 S	0	0	12	82	336	850	1572	2214	2574	2659	2660	2660	2660
60 M	0	0	2	25	143	368	567	488	226	29	0	0	1849
60 S	0	0	2	27	170	539	1106	1593	1820	1849	1849	1849	1849

Corn Growing Degree Days
50 M	5	27	127	243	434	615	764	722	514	283	75	6	3815
50 S	5	31	159	402	836	1451	2215	2938	3452	3735	3810	3815	3815

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