IRON MTN, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(044297) IRON MOUNTAIN
From Year=1935 To Year=2012
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	58	126	285	497	784	1028	1237	1186	960	627	240	61	7088
57	34	90	231	438	722	968	1175	1124	900	566	191	36	6473
60	13	49	159	352	629	878	1082	1031	810	474	126	13	5615
65	2	12	70	221	476	728	927	876	660	327	50	2	4349
70	0	1	23	116	329	578	772	721	510	194	12	0	3256

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