DIVIDE 2 NW, MONTANA

Period of Record General Climate Summary - Heating Degree Days

Station:(242421) DIVIDE 2 NW
From Year=1915 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1403	1142	1068	766	523	283	100	131	379	693	1059	1350	8896
60	1248	1000	913	616	372	160	35	50	242	538	909	1195	7279
57	1155	916	820	526	287	104	17	25	173	445	819	1102	6389
55	1093	859	758	467	234	74	9	16	135	385	759	1040	5829
50	938	718	603	325	125	24	1	4	65	248	609	885	4545

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 Jul 28, 2006
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