SONORA, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(048353) SONORA RS
From Year=1903 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	653	517	458	302	146	35	1	3	27	166	426	630	3364
60	498	376	305	175	64	9	0	0	7	73	279	475	2262
57	405	292	221	115	35	4	0	0	3	39	199	382	1694
55	344	238	171	82	22	2	0	0	1	24	151	321	1356
50	196	119	74	30	5	0	0	0	0	6	61	180	671

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