DIVIDE, MONTANA

Period of Record General Climate Summary - Heating Degree Days

Station:(242421) DIVIDE 2 NW
From Year=1915 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	1399	1142	1060	769	528	285	96	130	374	697	1060	1358	8897
60	1244	1000	905	619	377	163	34	49	237	542	910	1203	7282
57	1151	916	812	529	292	106	16	25	169	450	820	1110	6395
55	1089	859	750	470	240	75	9	16	131	390	760	1048	5836
50	934	718	596	328	130	25	1	3	62	253	610	893	4553

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