GRAFTON, NORTH DAKOTA

Period of Record General Climate Summary - Cooling Degree Days

Station:(323594) GRAFTON STATE SCHOOL
From Year=1893 To Year=2011
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	17	128	299	448	391	151	22	0	0	1457
57	0	0	0	11	99	247	387	332	117	14	0	0	1207
60	0	0	0	6	64	176	298	248	76	6	0	0	874
65	0	0	0	2	26	85	163	131	32	1	0	0	440
70	0	0	0	0	8	32	67	53	11	0	0	0	172

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