IDALIA, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(054242) IDALIA 4 NNE
From Year=1941 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	34	129	271	560	840	1077	1007	709	364	105	25	5142
40 S	19	54	183	454	1014	1855	2932	3938	4647	5011	5116	5142	5142
45 M	4	11	62	162	413	691	922	852	560	240	50	6	3974
45 S	4	15	78	239	652	1343	2265	3117	3677	3917	3967	3974	3974
50 M	1	2	23	80	277	543	767	697	416	138	17	1	2960
50 S	1	3	26	106	383	925	1692	2389	2805	2943	2960	2960	2960
55 M	0	0	6	31	162	397	612	543	282	64	2	0	2100
55 S	0	0	6	37	199	596	1208	1751	2033	2097	2099	2100	2100
60 M	0	0	1	9	79	262	458	390	168	23	0	0	1388
60 S	0	0	1	10	89	351	809	1198	1366	1388	1388	1388	1388

Corn Growing Degree Days
50 M	34	47	125	206	348	520	686	641	441	263	100	37	3448
50 S	34	81	206	412	760	1280	1965	2607	3048	3311	3412	3448	3448

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