BRIAN HEAD, UTAH

Period of Record General Climate Summary - Growing Degree Days

Station:(420900) BRIAN HEAD
From Year=1991 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	0	0	1	7	87	311	496	477	221	37	1	0	1638
40 S	0	0	1	8	96	406	902	1379	1600	1637	1638	1638	1638
45 M	0	0	0	0	26	183	341	323	98	6	0	0	977
45 S	0	0	0	0	26	209	551	873	971	977	977	977	977
50 M	0	0	0	0	6	80	191	173	25	0	0	0	476
50 S	0	0	0	0	6	86	278	451	476	476	476	476	476
55 M	0	0	0	0	2	16	65	51	1	0	0	0	134
55 S	0	0	0	0	2	17	82	133	134	134	134	134	134
60 M	0	0	0	0	0	1	5	5	0	0	0	0	12
60 S	0	0	0	0	0	2	7	12	12	12	12	12	12

Corn Growing Degree Days
50 M	0	0	3	16	88	226	317	291	158	43	2	0	1143
50 S	0	0	3	19	107	332	649	940	1098	1141	1143	1143	1143

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