VISALIA, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(049367) VISALIA
From Year=1927 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	577	379	271	135	39	3	0	0	3	65	320	568	2361
60	423	241	140	55	10	0	0	0	0	19	186	413	1487
57	332	165	81	27	3	0	0	0	0	7	119	323	1056
55	273	120	52	15	1	0	0	0	0	3	82	264	810
50	143	41	11	2	0	0	0	0	0	0	24	135	355

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