HOLYOKE, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(054082) HOLYOKE
From Year=1893 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	14	29	105	278	570	849	1072	1015	700	372	89	19	5112
40 S	14	43	147	426	996	1845	2917	3933	4633	5004	5093	5112	5112
45 M	3	8	47	169	421	699	917	860	553	242	35	5	3959
45 S	3	11	58	226	647	1347	2264	3124	3677	3919	3954	3959	3959
50 M	0	1	17	87	283	550	762	705	408	135	9	1	2959
50 S	0	2	19	106	388	939	1701	2406	2815	2949	2959	2959	2959
55 M	0	0	5	35	166	404	607	551	274	60	1	0	2104
55 S	0	0	5	40	207	610	1218	1768	2043	2102	2103	2104	2104
60 M	0	0	1	10	80	266	453	397	160	19	0	0	1386
60 S	0	0	1	11	91	357	810	1207	1367	1385	1386	1386	1386

Corn Growing Degree Days
50 M	31	49	115	216	360	528	678	643	449	283	105	38	3494
50 S	31	80	195	411	771	1299	1977	2619	3068	3352	3456	3494	3494

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