GRANGEVILLE 11 SE, IDAHO

Period of Record General Climate Summary - Heating Degree Days

Station:(103780) GRANGEVILLE 11 SE
From Year=1964 To Year=1989
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1099	818	739	532	340	139	34	38	217	512	825	1066	6360
60	944	677	584	385	205	56	6	8	113	359	675	911	4925
57	851	592	491	300	139	26	2	3	69	273	585	818	4149
55	789	536	430	246	101	13	1	1	47	219	525	756	3664
50	634	395	281	129	35	1	0	0	13	107	376	601	2572

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