COLUMBIA 8 N, SOUTH DAKOTA

Period of Record General Climate Summary - Heating Degree Days

Station:(391873) COLUMBIA 8 N
From Year=1949 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	1735	1388	1142	626	281	66	13	29	211	567	1054	1532	8643
60	1580	1246	987	482	166	22	2	6	116	420	904	1377	7309
57	1487	1162	894	400	114	10	0	2	75	337	814	1284	6580
55	1425	1105	833	348	86	5	0	1	54	286	754	1222	6119
50	1270	964	680	229	37	1	0	0	19	176	606	1067	5048

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