RIGGINS, IDAHO

Period of Record General Climate Summary - Cooling Degree Days

Station:(107706) RIGGINS
From Year=1940 To Year=2006
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	7	57	190	360	632	626	339	87	2	0	2300
57	0	0	3	38	147	304	570	564	286	61	1	0	1975
60	0	0	1	18	95	226	478	472	213	33	0	0	1537
65	0	0	0	4	37	120	328	323	113	8	0	0	935
70	0	0	0	1	11	51	193	188	46	1	0	0	490

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 Jul 28, 2006
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