ROCKLIN, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(047516) ROCKLIN
From Year=1948 To Year=1976
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	679	490	429	264	105	18	1	1	13	138	406	649	3192
60	524	349	278	141	38	4	0	0	2	52	261	494	2141
57	431	266	194	85	17	1	0	0	0	25	182	401	1603
55	371	213	145	56	9	0	0	0	0	14	135	340	1283
50	226	98	52	14	1	0	0	0	0	2	48	198	638

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