BALTIMORE WSO ARPT, MARYLAND

Period of Record General Climate Summary - Heating Degree Days

From Year=1947 To Year=2012
Station:(180465) BALTIMORE 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
65 977 827 659 340 120 11 0 1 45 269 550 870 4669
60 822 686 509 216 48 2 0 0 13 153 406 715 3571
57 730 602 422 151 23 0 0 0 5 100 324 624 2982
55 669 547 366 115 12 0 0 0 2 71 273 563 2618
50 519 412 238 47 2 0 0 0 0 23 163 415 1818
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