SAN BERNARDINO, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(047723) SAN BERNARDINO
From Year=1927 To Year=2004
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	44	64	108	210	353	511	728	735	601	385	144	49	3932
57	26	41	72	162	293	451	666	673	541	324	103	28	3381
60	10	19	35	101	210	362	573	580	451	238	55	10	2645
65	1	4	7	33	97	220	418	425	304	117	14	1	1640
70	0	0	1	7	30	104	264	272	170	42	2	0	894

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 Apr 5, 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