CLARKSVILLE 3 NNE, MARYLAND

Period of Record General Climate Summary - Heating Degree Days

From Year=1967 To Year=2004
Station:(181862) CLARKSVILLE 3 NNE
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 1042 859 680 384 136 21 1 7 64 322 603 905 5025
60 887 718 530 253 59 4 0 1 22 197 458 750 3879
57 794 634 443 184 30 1 0 0 10 136 374 658 3264
55 733 578 386 144 17 0 0 0 5 102 322 598 2885
50 581 442 255 64 3 0 0 0 0 41 203 449 2039
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