SMITHFIELD, NORTH CAROLINA

Period of Record General Climate Summary - Heating Degree Days

From Year=1892 To Year=2012
Station:(317994) SMITHFIELD
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
65 712 581 426 184 45 3 0 0 16 166 414 663 3211
60 562 445 294 97 14 0 0 0 3 81 282 514 2291
57 475 367 224 59 5 0 0 0 1 47 212 428 1819
55 419 318 182 40 2 0 0 0 0 31 171 373 1538
50 289 206 97 13 0 0 0 0 0 9 88 247 949
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