MITCHELL 2 N, SOUTH DAKOTA

Period of Record General Climate Summary - Heating Degree Days

Station:(395671) MITCHELL
From Year=1893 To Year=2003
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1504	1248	999	525	222	48	6	14	147	456	918	1343	7431
60	1349	1106	845	388	125	16	1	3	75	318	768	1188	6182
57	1256	1022	753	313	82	7	0	1	46	246	679	1095	5499
55	1194	965	693	266	59	4	0	0	32	203	620	1033	5069
50	1039	824	546	165	23	1	0	0	11	116	475	878	4078

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