BONNY LAKE, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(050834) BONNY LAKE
From Year=1949 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	18	38	110	287	582	874	1103	1041	730	401	102	25	5311
40 S	18	56	166	454	1035	1909	3012	4054	4783	5184	5286	5311	5311
45 M	4	12	52	177	433	724	948	886	582	270	43	6	4138
45 S	4	16	68	245	678	1402	2350	3236	3819	4089	4132	4138	4138
50 M	1	3	19	92	294	575	793	731	439	160	12	1	3118
50 S	1	3	22	114	408	983	1776	2507	2947	3106	3118	3118	3118
55 M	0	0	5	39	176	428	638	577	305	78	1	0	2247
55 S	0	0	5	44	219	648	1286	1863	2167	2245	2247	2247	2247
60 M	0	0	1	11	87	290	484	424	187	29	0	0	1512
60 S	0	0	1	12	99	389	873	1296	1483	1512	1512	1512	1512

Corn Growing Degree Days
50 M	37	56	114	216	361	544	701	659	457	295	109	45	3594
50 S	37	93	207	423	784	1328	2029	2688	3145	3440	3549	3594	3594

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