EL MIRAGE, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(042771) EL MIRAGE FIELD
From Year=1971 To Year=2010
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	681	524	438	281	109	16	0	1	22	166	458	700	3396
60	526	383	290	162	46	4	0	0	6	75	312	545	2349
57	434	301	211	106	24	1	0	0	2	42	232	453	1804
55	372	247	164	76	14	1	0	0	1	27	184	391	1478
50	226	132	73	26	2	0	0	0	0	8	91	245	803

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