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Period of Record General Climate Summary - Heating Degree Days

Station:(475255) MEDFORD 1 SW
From Year=1889 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	1659	1410	1179	682	346	109	34	61	253	594	1026	1483	8836
60	1504	1269	1024	536	221	44	7	17	147	445	876	1328	7420
57	1411	1184	932	451	159	22	2	6	98	361	786	1235	6648
55	1349	1128	870	397	124	13	1	3	72	309	727	1173	6164
50	1194	986	717	271	58	2	0	0	29	192	579	1018	5047

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