ALTURAS, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(040161) ALTURAS RANGER STATION
From Year=1905 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1114	899	825	616	416	200	52	76	238	539	826	1062	6864
60	959	758	670	467	272	99	13	21	122	386	676	907	5350
57	866	673	577	378	197	58	5	9	74	299	586	814	4536
55	804	616	515	321	153	39	3	4	51	244	526	752	4028
50	649	475	363	192	70	11	0	1	17	129	377	597	2880

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