COLFAX, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(041912) COLFAX
From Year=1948 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	639	513	495	328	170	43	3	4	31	158	436	624	3443
60	484	372	344	203	85	14	0	0	9	72	293	469	2347
57	392	290	260	142	50	6	0	0	4	41	215	378	1778
55	332	239	208	107	33	3	0	0	2	26	169	318	1436
50	194	126	101	46	8	0	0	0	0	6	76	180	738

Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. 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