CASTLETON, UTAH

Period of Record General Climate Summary - Growing Degree Days

Station:(421230) CASTLETON
From Year=1963 To Year=1978
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	7	14	112	278	604	856	1096	1027	711	348	81	7	5141
40 S	7	21	132	410	1014	1871	2967	3993	4705	5053	5134	5141	5141
45 M	1	1	51	164	453	706	941	872	562	223	28	1	4005
45 S	1	3	54	218	672	1378	2319	3191	3753	3976	4004	4005	4005
50 M	0	0	17	82	313	557	786	717	416	123	5	0	3015
50 S	0	0	17	99	412	969	1755	2471	2887	3010	3015	3015	3015
55 M	0	0	3	31	193	409	631	562	276	54	0	0	2159
55 S	0	0	3	34	227	636	1266	1828	2104	2158	2159	2159	2159
60 M	0	0	0	8	96	272	476	407	152	13	0	0	1424
60 S	0	0	0	8	104	376	852	1258	1411	1424	1424	1424	1424

Corn Growing Degree Days
50 M	3	12	76	178	380	555	721	674	454	216	49	4	3323
50 S	3	16	92	270	650	1205	1926	2600	3054	3270	3319	3323	3323

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