ALTON, UTAH

Period of Record General Climate Summary - Growing Degree Days

Station:(420086) ALTON
From Year=1928 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	2	7	32	141	348	580	813	764	536	268	48	5	3543
40 S	2	9	42	183	531	1110	1923	2687	3223	3491	3539	3543	3543
45 M	0	1	7	59	212	431	658	609	387	144	11	0	2518
45 S	0	1	8	67	279	709	1367	1976	2363	2508	2518	2518	2518
50 M	0	0	1	16	101	287	503	454	243	55	1	0	1659
50 S	0	0	1	17	117	404	906	1361	1604	1658	1659	1659	1659
55 M	0	0	0	2	31	158	348	300	117	12	0	0	968
55 S	0	0	0	2	33	191	539	839	956	968	968	968	968
60 M	0	0	0	0	6	63	196	153	34	1	0	0	453
60 S	0	0	0	0	6	69	265	418	452	453	453	453	453

Corn Growing Degree Days
50 M	8	14	45	138	270	402	522	485	360	212	63	15	2534
50 S	8	22	68	205	475	877	1399	1884	2244	2456	2519	2534	2534

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