JAMESTOWN MUNI AP, NORTH DAKOTA

Period of Record General Climate Summary - Heating Degree Days

Station:(324413) JAMESTOWN FAA AIRPORT
From Year=1948 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1775	1443	1204	685	330	93	19	42	255	616	1108	1583	9153
60	1620	1302	1049	540	207	34	3	11	148	467	958	1428	7767
57	1527	1217	956	456	147	16	1	4	98	382	868	1335	7007
55	1465	1161	894	402	114	9	0	2	72	328	808	1273	6527
50	1310	1020	741	275	53	2	0	0	28	208	659	1118	5413

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