NEPTUNE 3 S, TENNESSEE

Period of Record General Climate Summary - Heating Degree Days

From Year=1971 To Year=2012
Station:(401663) NEPTUNE 3 S
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
65 871 693 473 272 96 8 1 1 37 241 504 797 3992
60 717 554 335 169 39 1 0 0 12 138 366 642 2974
57 626 474 261 119 20 0 0 0 5 91 292 551 2439
55 567 422 217 90 11 0 0 0 3 66 246 491 2115
50 426 302 125 41 2 0 0 0 0 24 150 352 1421
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