FLOYD, VIRGINIA

Period of Record General Climate Summary - Growing Degree Days

From Year=1933 To Year=2006
Station:(443071) FLOYD
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 50 55 165 361 620 814 951 914 699 416 170 62 5277
40 S 50 105 270 632 1252 2065 3016 3930 4629 5046 5215 5277 5277
45 M 21 21 87 234 467 664 796 759 549 275 89 27 3988
45 S 21 42 129 363 829 1493 2289 3047 3597 3872 3961 3988 3988
50 M 7 6 38 134 320 514 641 604 403 157 38 9 2871
50 S 7 14 52 186 506 1020 1661 2264 2667 2824 2863 2871 2871
55 M 2 1 13 64 191 366 486 449 264 72 11 2 1921
55 S 2 3 16 80 271 637 1123 1572 1836 1908 1919 1921 1921
60 M 0 0 3 21 90 225 332 297 144 24 2 0 1138
60 S 0 0 3 25 115 340 671 968 1112 1136 1138 1138 1138
Corn Growing Degree Days
50 M 31 41 116 238 386 527 634 605 443 268 114 40 3444
50 S 31 72 189 427 813 1339 1974 2579 3022 3290 3404 3444 3444
Derived form the 1933-2006 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