PIERCE, IDAHO

Period of Record General Climate Summary - Heating Degree Days

Station:(107046) PIERCE
From Year=1963 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	1235	1040	955	724	491	275	117	141	383	690	972	1248	8271
60	1080	899	800	574	344	157	43	56	244	535	822	1093	6647
57	987	814	707	484	263	102	19	28	172	443	732	1000	5751
55	925	758	645	425	214	72	11	16	132	383	672	938	5190
50	770	617	490	282	112	23	2	3	56	240	522	783	3898

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