BALTIMORE WSO ARPT, MARYLAND

Period of Record General Climate Summary - Cooling Degree Days

From Year=1947 To Year=2012
Station:(180465) BALTIMORE WSO ARPT
Averages Daily Extremes
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 2 2 19 90 278 531 692 642 409 133 25 3 2827
57 1 1 13 66 226 472 630 580 351 100 16 2 2459
60 0 0 7 41 158 383 537 487 270 61 8 1 1953
65 0 0 2 15 75 242 383 333 151 22 2 0 1225
70 0 0 0 4 26 126 232 189 66 6 0 0 650
Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. 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