IMPERIAL, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(044223) IMPERIAL
From Year=1948 To Year=2006
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	83	156	298	472	709	929	1137	1128	942	644	264	78	6840
57	51	112	240	412	647	869	1075	1066	882	582	210	47	6193
60	21	61	161	324	554	779	982	973	792	490	139	17	5293
65	2	14	64	191	400	629	827	818	642	339	52	2	3980
70	0	1	16	87	255	479	672	663	492	201	9	0	2876

Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Table updated on Jul 28, 2006
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