POTLATCH 3 NNE, IDAHO

Period of Record General Climate Summary - Heating Degree Days

Station:(107301) POTLATCH 3 NNE
From Year=1915 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	1133	900	832	601	407	225	84	95	275	567	844	1081	7044
60	978	758	677	452	263	111	24	29	153	414	694	926	5479
57	885	674	584	364	187	61	8	11	97	325	604	833	4634
55	823	617	522	307	142	38	4	5	68	269	544	771	4109
50	668	476	369	177	56	7	0	0	22	146	395	616	2934

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