CASTLE VALLEY, UTAH

Period of Record General Climate Summary - Growing Degree Days

Station:(421241) CASTLE VALLEY INST
From Year=1978 To Year=2009
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	45	207	422	720	1001	1224	1139	822	476	123	9	6197
40 S	8	53	260	682	1402	2403	3628	4767	5589	6065	6188	6197	6197
45 M	1	12	103	285	566	851	1069	984	672	331	53	2	4930
45 S	1	13	117	402	967	1819	2888	3872	4544	4875	4928	4930	4930
50 M	0	2	42	169	414	702	914	829	523	200	16	1	3811
50 S	0	2	44	212	626	1328	2242	3072	3594	3794	3810	3811	3811
55 M	0	0	13	83	273	552	759	674	378	97	3	0	2832
55 S	0	0	13	96	369	921	1680	2355	2732	2829	2832	2832	2832
60 M	0	0	3	30	154	405	604	519	242	34	0	0	1992
60 S	0	0	3	33	187	592	1196	1716	1958	1992	1992	1992	1992

Corn Growing Degree Days
50 M	7	35	143	272	456	639	773	735	531	306	88	7	3992
50 S	7	42	184	456	912	1551	2324	3059	3590	3897	3985	3992	3992

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