BRIAN HEAD, UTAH

Period of Record General Climate Summary - Growing Degree Days

Station:(420900) BRIAN HEAD
From Year=1991 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	0	0	0	8	87	302	492	465	217	37	0	0	1608
40 S	0	0	0	8	95	398	890	1354	1571	1608	1608	1608	1608
45 M	0	0	0	0	27	175	338	310	94	6	0	0	951
45 S	0	0	0	0	27	203	541	851	945	951	951	951	951
50 M	0	0	0	0	7	75	188	161	23	0	0	0	455
50 S	0	0	0	0	7	82	270	432	455	455	455	455	455
55 M	0	0	0	0	2	14	62	43	1	0	0	0	122
55 S	0	0	0	0	2	16	78	121	122	122	122	122	122
60 M	0	0	0	0	0	1	4	3	0	0	0	0	8
60 S	0	0	0	0	0	1	6	8	8	8	8	8	8

Corn Growing Degree Days
50 M	0	0	1	17	85	218	313	280	152	43	1	0	1110
50 S	0	0	2	18	104	322	635	914	1066	1109	1110	1110	1110

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