PERRIS, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(046816) PERRIS
From Year=1961 To Year=1973
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	22	35	53	134	270	406	684	707	511	309	87	16	3232
57	13	20	32	97	216	347	622	645	451	251	55	8	2756
60	5	8	12	52	143	263	529	552	361	171	24	1	2120
65	1	1	1	12	53	139	374	397	219	72	2	0	1271
70	0	0	0	1	14	56	220	246	104	20	0	0	661

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 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