SMITHFIELD, NORTH CAROLINA

Period of Record General Climate Summary - Growing Degree Days

From Year=1892 To Year=2012
Station:(317994) SMITHFIELD
Averages Daily Extremes
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 159 180 374 614 879 1075 1207 1170 964 656 353 181 7812
40 S 159 339 713 1327 2206 3281 4488 5658 6622 7278 7631 7812 7812
45 M 88 102 247 466 724 925 1052 1015 814 503 228 100 6264
45 S 88 190 437 903 1627 2552 3604 4619 5433 5936 6164 6264 6264
50 M 43 51 147 326 569 775 897 860 664 355 131 50 4868
50 S 43 94 240 566 1136 1911 2807 3668 4332 4687 4817 4868 4868
55 M 18 21 77 204 416 625 742 705 514 223 64 21 3630
55 S 18 39 116 320 736 1362 2103 2808 3323 3545 3609 3630 3630
60 M 6 7 34 111 273 476 587 550 367 118 24 7 2557
60 S 6 12 46 156 429 905 1491 2041 2408 2526 2550 2557 2557
Corn Growing Degree Days
50 M 107 123 244 393 573 724 821 799 643 423 237 121 5210
50 S 107 230 475 868 1441 2165 2986 3785 4428 4852 5089 5210 5210
Derived form the 1892-2012 Data
M = Monthly Data
S - Running sum of monthly data.
Growing 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.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
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