BALTIMORE WSO CITY, MARYLAND

Period of Record General Climate Summary - Heating Degree Days

From Year=1893 To Year=2001
Station:(180470) BALTIMORE WSO CITY
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
65 911 798 616 308 85 8 0 1 30 208 497 816 4278
60 756 657 468 190 30 1 0 0 8 108 356 662 3237
57 664 573 383 132 13 0 0 0 3 64 278 570 2682
55 604 518 330 99 7 0 0 0 1 43 230 510 2342
50 454 385 208 40 1 0 0 0 0 12 128 365 1593
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