ROANOKE WSO AIRPORT, VIRGINIA

Period of Record General Climate Summary - Heating Degree Days

From Year=1948 To Year=2012
Station:(447285) ROANOKE WSO AIRPORT
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
65 887 737 570 279 96 11 1 2 47 258 528 816 4230
60 733 597 424 170 38 2 0 0 14 145 385 662 3170
57 641 513 343 117 18 0 0 0 5 94 305 571 2609
55 581 459 292 86 10 0 0 0 3 67 256 511 2266
50 435 330 179 34 1 0 0 0 0 23 151 369 1523
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