NARA VISA, NEW MEXICO

Period of Record General Climate Summary - Heating Degree Days

Station:(296040) NARA VISA
From Year=1905 To Year=1966
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	873	729	568	321	122	12	0	1	27	269	600	919	4442
60	718	589	419	191	56	4	0	0	9	157	451	764	3358
57	626	505	336	129	33	1	0	0	4	106	366	671	2776
55	565	450	284	96	22	1	0	0	2	79	312	609	2420
50	416	318	176	40	9	0	0	0	1	35	198	457	1649

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