NOGALES, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(025921) NOGALES
From Year=1892 To Year=1983
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	590	458	381	195	62	2	0	0	3	99	351	554	2694
60	435	318	235	91	18	0	0	0	0	35	210	400	1742
57	343	238	159	50	7	0	0	0	0	16	139	309	1261
55	283	188	116	32	4	0	0	0	0	9	101	251	984
50	150	88	44	8	0	0	0	0	0	2	38	125	455

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