BRIGHTON 3 SE, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(050950) BRIGHTON
From Year=1973 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	19	36	133	289	550	830	1034	966	678	356	99	26	5016
40 S	19	55	188	477	1027	1857	2891	3857	4535	4891	4990	5016	5016
45 M	4	10	60	176	401	680	879	811	530	226	44	7	3828
45 S	4	15	75	250	651	1331	2210	3021	3551	3777	3821	3828	3828
50 M	0	2	20	88	264	531	724	656	387	120	14	1	2808
50 S	0	2	23	111	375	906	1630	2286	2673	2792	2807	2808	2808
55 M	0	0	4	33	149	385	569	501	252	48	2	0	1943
55 S	0	0	4	38	186	571	1141	1641	1893	1941	1943	1943	1943
60 M	0	0	0	8	63	247	415	347	136	12	0	0	1229
60 S	0	0	0	9	72	319	734	1081	1217	1229	1229	1229	1229

Corn Growing Degree Days
50 M	37	55	136	224	353	513	647	610	437	278	106	43	3438
50 S	37	92	228	452	805	1318	1965	2575	3012	3290	3396	3438	3438

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