KNOXVILLE WSO AIRPORT, TENNESSEE

Period of Record General Climate Summary - Heating Degree Days

From Year=1910 To Year=2012
Station:(404950) KNOXVILLE WSO AIRPORT
Averages Daily Extremes
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 801 646 474 209 58 3 0 0 19 189 486 745 3630
60 648 507 335 116 20 0 0 0 5 97 347 592 2668
57 559 427 261 76 9 0 0 0 2 60 270 502 2166
55 500 375 217 55 5 0 0 0 1 42 224 445 1863
50 362 257 125 20 1 0 0 0 0 13 126 309 1212
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 May 22,
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Southeast Regional Climate Center, SERCC Webmaster