SMITHFIELD, NORTH CAROLINA

Period of Record General Climate Summary - Cooling Degree Days

From Year=1892 To Year=2012
Station:(317994) SMITHFIELD
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 18 21 77 204 416 625 742 705 514 223 64 21 3630
57 12 14 57 163 357 565 680 643 455 177 45 14 3181
60 6 7 34 111 273 476 587 550 367 118 24 7 2557
65 1 1 11 47 150 328 432 396 230 48 6 1 1650
70 0 0 2 13 61 191 279 244 115 13 1 0 918
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