WASHINGTON NATL WSCMO A, VIRGINIA

Period of Record General Climate Summary - Heating Degree Days

From Year=1948 To Year=2012
Station:(448906) WASHINGTON NATL WSCMO A
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
65 899 748 579 272 76 5 0 0 24 204 477 792 4076
60 745 608 431 159 25 0 0 0 5 103 336 638 3051
57 653 524 348 105 10 0 0 0 2 60 260 547 2508
55 592 470 296 75 4 0 0 0 1 40 213 487 2178
50 444 339 180 27 0 0 0 0 0 10 116 343 1458
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