JOHN H KERR DAM, VIRGINIA

Period of Record General Climate Summary - Heating Degree Days

From Year=1948 To Year=2012
Station:(444414) JOHN H KERR DAM
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
65 839 701 532 248 75 8 0 1 31 221 461 752 3869
60 685 560 389 146 28 2 0 0 9 120 325 599 2863
57 595 478 309 97 13 0 0 0 3 76 251 510 2333
55 535 424 259 71 7 0 0 0 1 54 207 452 2010
50 393 298 153 25 1 0 0 0 0 18 114 315 1316
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