MADISON 2SE, SOUTH DAKOTA

Period of Record General Climate Summary - Heating Degree Days

Station:(395090) MADISON 2 E
From Year=1961 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	1606	1305	1054	585	256	57	12	28	187	524	991	1445	8049
60	1451	1164	900	444	150	19	2	6	100	382	841	1290	6747
57	1358	1079	808	364	101	8	0	2	63	303	751	1197	6035
55	1296	1023	747	314	76	4	0	1	45	254	692	1135	5587
50	1141	881	598	200	31	1	0	0	17	153	546	980	4548

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