APPOMATTOX, VIRGINIA

Period of Record General Climate Summary - Growing Degree Days

From Year=1937 To Year=2012
Station:(440243) APPOMATTOX
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 56 71 223 461 733 952 1103 1065 829 500 249 90 6332
40 S 56 127 350 811 1544 2496 3599 4665 5494 5994 6243 6332 6332
45 M 23 32 129 322 578 802 948 910 679 352 147 41 4963
45 S 23 55 184 506 1084 1886 2834 3744 4424 4775 4922 4963 4963
50 M 8 11 65 202 426 652 793 755 530 219 74 16 3751
50 S 8 19 84 286 711 1364 2157 2912 3442 3661 3735 3751 3751
55 M 2 3 27 112 283 503 638 600 382 115 29 6 2700
55 S 2 4 32 144 427 929 1567 2168 2550 2665 2695 2700 2700
60 M 0 0 10 52 162 355 483 446 245 47 8 1 1810
60 S 0 1 10 62 224 580 1063 1508 1753 1801 1809 1810 1810
Corn Growing Degree Days
50 M 40 54 148 285 456 635 751 726 533 307 152 58 4147
50 S 40 94 242 527 983 1619 2370 3096 3630 3937 4089 4147 4147
Derived form the 1937-2012 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