ROY, NEW MEXICO

Period of Record General Climate Summary - Heating Degree Days

Station:(297638) ROY
From Year=1905 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	990	801	715	444	201	37	4	8	90	365	694	972	5319
60	835	660	560	300	96	10	0	1	34	225	544	817	4081
57	742	575	469	222	56	4	0	0	18	157	455	724	3419
55	680	519	409	176	37	2	0	0	12	118	396	662	3010
50	526	381	271	88	12	0	0	0	4	52	261	508	2104

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