BRIDGER, MONTANA

Period of Record General Climate Summary - Heating Degree Days

Station:(241102) BRIDGER
From Year=1900 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	1298	1044	905	580	328	119	17	30	220	530	899	1214	7183
60	1143	903	750	434	201	49	3	7	121	382	749	1059	5801
57	1050	818	657	350	139	25	1	3	79	300	660	966	5048
55	988	762	596	298	105	15	0	1	57	250	600	904	4577
50	833	621	448	183	45	3	0	0	23	147	456	750	3509

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