ALEXANDRIA, SOUTH DAKOTA

Period of Record General Climate Summary - Cooling Degree Days

Station:(390128) ALEXANDRIA
From Year=1893 To Year=2012
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	0	0	6	50	202	433	623	562	286	71	2	0	2235
57	0	0	4	36	160	375	561	501	238	51	1	0	1926
60	0	0	2	21	108	292	469	409	173	28	0	0	1502
65	0	0	0	6	48	170	318	264	91	9	0	0	905
70	0	0	0	1	16	81	181	140	40	2	0	0	461

Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. 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