SUN VALLEY, IDAHO

Period of Record General Climate Summary - Heating Degree Days

Station:(108906) SUN VALLEY
From Year=1948 To Year=1972
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1546	1279	1244	845	571	364	156	189	418	724	1073	1457	9866
60	1391	1137	1089	695	416	221	55	79	273	569	923	1302	8151
57	1298	1053	996	605	325	147	23	40	194	476	833	1209	7199
55	1236	996	934	545	266	105	12	25	149	415	773	1147	6603
50	1081	855	779	396	141	35	2	7	67	266	623	992	5244

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