GARDINER, MONTANA

Period of Record General Climate Summary - Heating Degree Days

Station:(243378) GARDINER
From Year=1956 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	1283	1051	937	656	391	163	28	43	237	555	965	1242	7550
60	1128	910	782	507	251	77	7	14	134	404	815	1087	6116
57	1035	825	689	419	179	43	3	7	90	319	725	994	5328
55	973	769	627	363	138	27	1	4	67	267	665	932	4833
50	818	628	473	234	62	6	0	1	30	158	517	777	3703

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