DALECARLIA RESVR DC, MARYLAND

Period of Record General Climate Summary - Cooling Degree Days

From Year=1948 To Year=2012
Station:(182325) DALECARLIA RESVR DC
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 3 3 26 122 314 551 704 660 432 145 29 4 2992
57 1 2 18 93 260 491 642 598 374 109 18 3 2610
60 0 1 9 60 187 402 549 505 291 67 9 1 2082
65 0 0 2 24 92 260 394 351 168 24 2 0 1318
70 0 0 0 6 34 139 242 206 76 6 0 0 709
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