MERCED MUNICIPAL ARPT, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(045532) MERCED MUNICIPAL ARPT
From Year=1948 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	592	404	320	169	50	6	0	0	5	84	354	599	2584
60	438	264	176	71	11	1	0	0	0	26	211	445	1644
57	346	185	106	35	3	0	0	0	0	10	138	353	1177
55	287	137	69	20	1	0	0	0	0	5	97	293	910
50	153	48	15	3	0	0	0	0	0	1	30	157	407

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