WILLIAMSBURG 2 N, VIRGINIA

Period of Record General Climate Summary - Cooling Degree Days

From Year=1948 To Year=2012
Station:(449151) WILLIAMSBURG 2 N
Averages Daily Extremes
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 9 11 48 163 356 570 713 676 476 191 58 15 3287
57 5 7 35 128 299 510 651 614 417 149 40 10 2865
60 2 3 20 85 220 421 558 521 330 96 21 5 2281
65 0 0 7 36 113 275 403 367 196 37 5 1 1440
70 0 0 1 10 42 148 251 217 90 10 1 0 770
Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. 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