CHESTERTOWN, MARYLAND

Period of Record General Climate Summary - Heating Degree Days

From Year=1893 To Year=2011
Station:(181750) CHESTERTOWN
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
65 979 852 665 351 111 13 0 2 40 257 545 876 4690
60 824 711 514 224 43 2 0 0 11 142 401 721 3594
57 732 626 427 159 19 0 0 0 4 90 319 629 3006
55 671 571 371 120 10 0 0 0 2 62 267 568 2643
50 520 435 241 50 1 0 0 0 0 20 156 419 1842
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