VISTA 1 NE, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(049378) VISTA 1 NE
From Year=1957 To Year=2005
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	293	246	246	172	89	27	1	0	3	37	156	289	1559
60	158	122	111	65	17	2	0	0	0	4	54	150	683
57	92	63	52	28	4	0	0	0	0	1	21	84	344
55	57	36	27	14	1	0	0	0	0	0	9	51	195
50	12	5	2	1	0	0	0	0	0	0	1	10	30

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 Apr 5, 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