WASHINGTON NATL WSCMO A, VIRGINIA

Period of Record General Climate Summary - Cooling Degree Days

From Year=1948 To Year=2012
Station:(448906) WASHINGTON NATL WSCMO A
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 3 4 29 128 347 598 757 709 478 179 39 5 3275
57 2 2 20 97 290 538 695 647 419 138 25 3 2876
60 1 1 10 62 212 448 602 554 333 88 12 1 2323
65 0 0 3 24 108 303 447 399 202 34 3 0 1522
70 0 0 0 7 42 172 293 248 98 10 0 0 871
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