WILMINGTON WSO ARPT, DELAWARE

Period of Record General Climate Summary - Heating Degree Days

From Year=1948 To Year=2012
Station:(079595) WILMINGTON WSO ARPT
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 1019 866 700 375 137 15 0 2 51 288 567 897 4918
60 865 725 548 245 57 2 0 0 15 168 421 742 3789
57 772 641 458 176 28 0 0 0 6 111 338 650 3181
55 710 585 401 135 16 0 0 0 3 80 286 589 2804
50 558 448 267 57 2 0 0 0 0 27 170 439 1968
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