GRANTS PASS, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(353445) GRANTS PASS
From Year=1893 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	783	601	538	380	223	85	14	17	90	326	599	780	4435
60	628	459	383	240	111	26	2	2	30	186	449	625	3142
57	535	375	293	166	63	10	1	0	12	117	360	532	2465
55	473	319	236	124	40	4	1	0	5	80	302	470	2055
50	321	187	113	45	8	0	1	0	0	23	169	319	1186

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