REDDING, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(047296) REDDING
From Year=1931 To Year=1979
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	8	18	75	191	417	637	877	812	630	347	73	10	4094
57	4	10	51	150	359	577	815	750	570	291	50	5	3632
60	1	4	26	97	278	488	722	657	480	214	26	1	2995
65	0	0	5	38	164	346	567	502	335	112	7	0	2076
70	0	0	0	9	81	219	413	350	203	46	1	0	1323

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