FAIRFIELD, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(042934) FAIRFIELD
From Year=1950 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	2	16	60	132	287	426	546	539	467	283	54	4	2816
57	1	7	36	93	229	367	484	477	408	226	31	1	2359
60	0	2	14	50	153	279	391	384	318	148	12	0	1750
65	0	0	2	14	65	149	239	232	178	55	1	0	934
70	0	0	0	3	21	65	112	103	73	13	0	0	391

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