BOISE WSFO AIRPORT, IDAHO

Period of Record General Climate Summary - Heating Degree Days

Station:(101022) BOISE WSFO AIRPORT
From Year=1940 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 1090 821 694 465 250 83 7 15 120 401 762 1044 5754
60 935 680 539 324 141 30 1 3 54 262 612 889 4470
57 842 595 447 246 90 14 0 1 30 190 523 796 3773
55 780 539 387 198 63 7 0 0 20 149 463 734 3339
50 625 398 245 97 20 1 0 0 5 69 321 580 2362
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