REDFIELD, SOUTH DAKOTA

Period of Record General Climate Summary - Heating Degree Days

Station:(397047) REDFIELD
From Year=1897 To Year=1977
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1631	1363	1084	579	269	63	10	21	177	502	983	1440	8122
60	1476	1221	930	438	159	22	1	5	96	361	833	1285	6828
57	1383	1137	838	360	109	10	0	2	62	285	743	1192	6120
55	1321	1080	777	311	82	6	0	1	45	239	683	1130	5674
50	1166	939	626	201	36	1	0	0	17	144	535	975	4640

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