MASON DAM, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(355258) MASON DAM
From Year=1969 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	1285	1037	919	677	468	259	102	102	298	615	943	1261	7966
60	1130	896	764	527	320	142	36	36	173	460	793	1106	6385
57	1037	811	671	439	240	89	16	16	115	370	703	1013	5521
55	975	755	609	381	192	62	9	8	85	312	643	951	4982
50	820	613	455	243	92	20	1	1	32	181	493	796	3746

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