MILLGAP 1 NNE, VIRGINIA

Period of Record General Climate Summary - Heating Degree Days

From Year=1976 To Year=2012
Station:(445595) MILLGAP 1 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 1152 991 823 493 271 73 34 27 156 495 734 1072 6320
60 997 850 668 350 155 18 5 4 67 347 584 917 4962
57 905 765 576 272 102 5 1 1 36 264 495 824 4245
55 843 708 517 226 73 2 0 0 23 214 436 762 3805
50 691 568 375 129 25 0 0 0 6 114 300 609 2818
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