SAINT MARIES, IDAHO

Period of Record General Climate Summary - Heating Degree Days

Station:(108062) SAINT MARIES
From Year=1897 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	1129	900	799	548	337	158	46	59	226	539	849	1077	6669
60	974	759	644	401	202	67	11	16	117	386	699	922	5199
57	881	674	551	315	135	33	3	5	70	298	609	829	4405
55	819	617	490	261	97	19	1	2	47	243	549	767	3913
50	664	476	337	140	33	3	0	0	14	126	400	612	2806

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