CLARKSVILLE, VIRGINIA

Period of Record General Climate Summary - Heating Degree Days

From Year=1891 To Year=2012
Station:(441746) CLARKSVILLE
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
65 722 640 480 238 56 1 0 0 20 202 466 743 3569
60 570 500 340 140 17 0 0 0 4 107 324 590 2592
57 480 418 265 95 6 0 0 0 1 66 247 499 2076
55 423 365 220 71 2 0 0 0 0 45 200 440 1766
50 289 240 121 33 0 0 0 0 0 15 106 301 1105
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