THE PLAINS 2 NNE, VIRGINIA

Period of Record General Climate Summary - Heating Degree Days

From Year=1954 To Year=2009
Station:(448396) THE PLAINS 2 NNE
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
65 934 886 705 359 190 12 0 0 39 279 564 849 4818
60 779 745 554 233 91 0 0 0 9 163 418 694 3686
57 688 661 465 171 52 0 0 0 2 113 336 602 3089
55 628 605 409 135 32 0 0 0 0 87 284 541 2721
50 481 466 277 63 9 0 0 0 0 36 173 393 1898
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