GATEWAY, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(053246) GATEWAY 1 SE
From Year=1947 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	11	47	198	400	685	943	1160	1085	801	453	125	13	5920
40 S	11	57	255	655	1339	2282	3442	4527	5328	5781	5906	5920	5920
45 M	1	12	98	263	530	793	1005	930	651	307	53	3	4646
45 S	1	13	111	374	904	1697	2702	3632	4283	4590	4643	4646	4646
50 M	0	2	38	149	379	643	850	775	502	177	15	0	3530
50 S	0	2	40	189	568	1211	2061	2836	3338	3515	3530	3530	3530
55 M	0	0	10	67	241	493	695	620	357	79	2	0	2564
55 S	0	0	10	78	318	812	1507	2127	2483	2562	2564	2564	2564
60 M	0	0	1	21	126	347	540	465	219	23	0	0	1744
60 S	0	0	1	23	149	496	1036	1501	1720	1744	1744	1744	1744

Corn Growing Degree Days
50 M	11	47	157	279	445	594	734	697	519	316	104	12	3916
50 S	11	58	215	494	939	1533	2267	2965	3484	3799	3904	3916	3916

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