ANGWIN PAC UNION COL, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(040212) ANGWIN PAC UNION COL
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	618	502	491	356	205	82	17	23	56	178	428	606	3562
60	463	362	342	225	102	24	2	2	14	84	286	452	2358
57	372	281	258	157	57	9	0	1	4	46	208	361	1754
55	312	229	206	118	35	4	0	0	1	28	162	302	1399
50	174	115	96	46	7	0	0	0	0	5	69	166	680

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