WILLIAMSBURG 2 N, VIRGINIA

Period of Record General Climate Summary - Heating Degree Days

From Year=1948 To Year=2012
Station:(449151) WILLIAMSBURG 2 N
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
65 819 678 515 237 71 5 0 1 20 193 426 716 3680
60 666 539 373 136 23 1 0 0 3 97 291 565 2694
57 576 458 295 89 9 0 0 0 1 57 221 477 2182
55 517 406 247 64 4 0 0 0 0 37 178 421 1873
50 377 283 143 22 0 0 0 0 0 10 93 288 1216
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