YUMA DATE ORCHARD, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(029653) YUMA DATE ORCHARD
From Year=1905 To Year=1929
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	391	249	150	48	6	0	0	0	0	30	179	398	1452
60	240	128	57	10	1	0	0	0	0	8	75	247	766
57	159	73	25	3	1	0	0	0	0	3	38	166	467
55	114	46	12	1	0	0	0	0	0	1	23	120	317
50	39	11	1	0	0	0	0	0	0	0	5	38	95

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