SWAN VALLEY 2 E, IDAHO

Period of Record General Climate Summary - Heating Degree Days

Station:(108937) SWAN VALLEY 2 E
From Year=1960 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	1384	1148	1007	708	464	230	65	88	306	646	1004	1343	8394
60	1229	1006	852	558	315	117	17	27	178	491	854	1188	6833
57	1136	922	759	469	234	70	6	13	117	399	764	1095	5985
55	1074	865	697	411	185	45	3	7	86	340	704	1033	5451
50	919	724	543	272	88	11	0	1	35	207	555	878	4234

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