MT SAN JACINTO WS, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(045978) MOUNT SAN JACINTO WSP
From Year=1969 To Year=1978
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1023	944	969	834	570	284	128	185	315	684	828	1024	7789
60	868	803	814	684	415	158	34	65	173	529	678	869	6092
57	775	718	721	594	324	98	9	24	103	437	588	776	5168
55	713	662	659	534	264	65	3	9	67	376	528	714	4595
50	559	521	504	384	136	17	0	0	10	233	379	559	3303

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 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