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Period of Record General Climate Summary - Heating Degree Days

Station:(132724) ESTHERVILLE
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	1565	1305	1054	574	253	56	10	26	175	490	943	1402	7853
60	1410	1163	900	433	147	19	1	5	91	350	793	1247	6560
57	1317	1079	808	354	99	9	0	1	56	275	704	1154	5855
55	1255	1022	747	304	73	4	0	0	39	229	645	1092	5411
50	1100	881	598	193	30	1	0	0	14	135	500	937	4388

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