GLENN DALE BELL STN, MARYLAND

Period of Record General Climate Summary - Heating Degree Days

From Year=1921 To Year=2007
Station:(183675) GLENN DALE BELL STN
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
65 967 825 654 355 127 18 1 5 56 291 565 881 4746
60 813 685 505 231 55 3 0 0 20 172 422 727 3635
57 721 601 420 167 29 1 0 0 9 116 342 635 3041
55 660 546 366 130 17 0 0 0 5 86 291 575 2675
50 511 412 240 58 3 0 0 0 1 33 180 429 1866
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