ALTA, UTAH

Period of Record General Climate Summary - Growing Degree Days

Station:(420072) ALTA
From Year=1905 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	0	1	4	32	150	379	647	604	334	112	13	1	2276
40 S	0	1	5	37	187	566	1212	1817	2151	2263	2275	2276	2276
45 M	0	0	1	9	68	250	492	450	207	47	2	0	1525
45 S	0	0	1	10	78	328	820	1270	1476	1523	1525	1525	1525
50 M	0	0	0	1	21	140	340	298	100	13	0	0	913
50 S	0	0	0	1	23	162	502	800	900	913	913	913	913
55 M	0	0	0	0	4	57	194	156	32	1	0	0	444
55 S	0	0	0	0	4	61	255	411	443	444	444	444	444
60 M	0	0	0	0	0	13	76	47	5	0	0	0	142
60 S	0	0	0	0	0	14	90	137	142	142	142	142	142

Corn Growing Degree Days
50 M	1	1	2	17	83	214	372	338	183	60	7	1	1279
50 S	1	2	4	21	104	318	690	1027	1211	1271	1278	1279	1279

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