WILLIAMSBURG, KENTUCKY

Period of Record General Climate Summary - Growing Degree Days

From Year=1957 To Year=2012
Station:(158709) WILLIAMSBURG
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 72 96 246 476 748 951 1094 1060 837 519 257 106 6462
40 S 72 169 415 891 1639 2589 3684 4744 5581 6100 6357 6462 6462
45 M 34 47 150 339 594 801 939 905 687 371 155 54 5077
45 S 34 81 231 571 1164 1965 2904 3809 4496 4868 5023 5077 5077
50 M 14 19 80 221 442 651 784 750 538 241 82 24 3846
50 S 14 33 113 335 777 1427 2212 2961 3499 3740 3822 3846 3846
55 M 5 6 35 129 299 501 629 595 391 135 35 8 2769
55 S 5 11 46 175 474 975 1604 2199 2591 2726 2761 2769 2769
60 M 1 1 12 62 176 353 474 440 255 62 10 2 1847
60 S 1 2 14 76 252 604 1079 1519 1773 1835 1845 1847 1847
Corn Growing Degree Days
50 M 47 73 173 316 482 635 747 719 546 335 170 67 4311
50 S 47 120 293 609 1091 1727 2473 3192 3739 4073 4243 4311 4311
Derived form the 1957-2012 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