PLENTYWOOD, MONTANA

Period of Record General Climate Summary - Heating Degree Days

Station:(246586) PLENTYWOOD
From Year=1906 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	1693	1326	1088	640	339	117	32	53	255	672	1144	1550	8909
60	1538	1185	933	494	213	49	6	15	150	521	994	1395	7492
57	1445	1100	840	410	151	24	1	6	102	433	904	1302	6718
55	1383	1043	778	357	116	14	0	3	76	376	844	1240	6231
50	1228	902	626	235	53	3	0	1	31	248	694	1085	5106

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