BOISE WSFO AIRPORT, IDAHO

Period of Record General Climate Summary - Heating Degree Days

Station:(101022) BOISE WSFO AIRPORT
From Year=1940 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	1096	825	699	466	253	86	8	16	125	402	767	1045	5790
60	941	684	544	325	142	31	1	4	57	264	617	890	4500
57	848	599	452	246	90	14	0	1	32	192	528	797	3800
55	786	543	392	198	64	7	0	0	21	150	468	735	3364
50	632	403	250	98	21	1	0	0	5	71	325	580	2385

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