CANYONLANDS THE NEEDLE, UTAH

Period of Record General Climate Summary - Growing Degree Days

Station:(421168) CANYONLANDS THE NEEDLE
From Year=1965 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	8	35	181	364	686	964	1197	1130	806	438	103	11	5924
40 S	8	44	225	589	1275	2239	3436	4567	5373	5810	5913	5924	5924
45 M	1	9	87	232	532	814	1042	975	656	295	39	2	4684
45 S	1	10	97	329	861	1675	2717	3692	4348	4643	4682	4684	4684
50 M	0	1	32	126	383	664	887	820	507	170	9	0	3600
50 S	0	1	33	159	542	1206	2093	2913	3420	3591	3600	3600	3600
55 M	0	0	8	55	246	515	732	665	361	80	1	0	2665
55 S	0	0	8	64	310	825	1557	2223	2584	2664	2665	2665	2665
60 M	0	0	1	16	135	369	577	510	227	26	0	0	1862
60 S	0	0	1	18	152	522	1099	1609	1836	1862	1862	1862	1862

Corn Growing Degree Days
50 M	10	40	153	265	454	607	741	715	525	313	93	11	3927
50 S	10	50	203	468	921	1529	2269	2985	3510	3823	3916	3927	3927

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 Jul 28, 2006
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