WALHALLA 1 SW, NORTH DAKOTA

Period of Record General Climate Summary - Cooling Degree Days

Station:(329155) WALHALLA
From Year=1904 To Year=1998
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	0	16	86	259	420	319	140	30	0	0	1269
57	0	0	0	10	65	212	360	262	104	20	0	0	1032
60	0	0	0	4	41	150	271	183	62	12	0	0	722
65	0	0	0	2	16	74	139	86	21	5	0	0	342
70	0	0	0	1	6	28	56	29	6	1	0	0	126

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