IPSWICH, SOUTH DAKOTA

Period of Record General Climate Summary - Heating Degree Days

Station:(394206) IPSWICH
From Year=1894 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	1655	1381	1098	612	292	75	13	28	206	561	1032	1487	8440
60	1500	1240	943	468	176	26	2	6	113	415	882	1332	7104
57	1407	1155	851	386	121	12	0	2	74	333	792	1239	6372
55	1345	1099	790	334	90	7	0	1	53	282	732	1177	5911
50	1190	958	638	217	39	1	0	0	21	173	584	1022	4843

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