SPRAY, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(358009) SPRAY
From Year=1937 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	953	688	613	462	227	63	7	18	94	362	666	876	5029
60	798	546	459	318	117	18	1	3	36	222	516	721	3754
57	705	462	369	239	69	7	0	1	18	151	427	628	3074
55	643	405	311	190	45	4	0	0	11	112	369	566	2656
50	490	268	181	92	11	1	0	0	2	43	232	414	1734

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