GATEWAY, COLORADO

Period of Record General Climate Summary - Cooling Degree Days

Station:(053246) GATEWAY 1 SE
From Year=1947 To Year=2012
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	0	0	10	67	241	493	695	620	357	79	2	0	2564
57	0	0	5	45	192	434	633	558	300	52	1	0	2219
60	0	0	1	21	126	347	540	465	219	23	0	0	1744
65	0	0	0	4	46	211	385	311	102	4	0	0	1064
70	0	0	0	0	9	100	232	166	29	0	0	0	536

Cooling 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.
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