WASHINGTON DC 3 SSW, VIRGINIA

Period of Record General Climate Summary - Cooling Degree Days

From Year=1944 To Year=1995
Station:(448902) WASHINGTON DC 3 SSW
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 0 0 9 86 223 427 571 538 327 87 19 1 2289
57 0 0 5 64 176 368 509 476 272 60 13 0 1944
60 0 0 2 39 117 283 416 384 198 30 6 0 1473
65 0 0 0 14 48 156 264 235 97 6 2 0 822
70 0 0 0 3 13 64 129 108 36 1 0 0 354
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