ARRIBA, COLORADO

Period of Record General Climate Summary - Heating Degree Days

Station:(050348) ARRIBA
From Year=1907 To Year=1958
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1165	974	891	565	322	83	7	13	129	436	826	1108	6519
60	1010	833	736	417	198	33	1	2	64	293	676	953	5217
57	917	749	643	334	139	17	0	1	40	221	586	860	4507
55	855	692	582	282	107	10	0	0	29	178	527	798	4061
50	701	552	433	175	51	2	0	0	12	98	383	644	3050

Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. 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