WYTHEVILLE POST OFFICE, VIRGINIA

Period of Record General Climate Summary - Growing Degree Days

From Year=1893 To Year=2012
Station:(449301) WYTHEVILLE POST OFFICE
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 47 56 177 372 647 840 979 950 739 433 175 60 5475
40 S 47 103 279 652 1298 2139 3117 4068 4806 5240 5415 5475 5475
45 M 18 22 94 243 493 690 824 795 589 290 92 25 4174
45 S 18 40 133 376 869 1560 2383 3179 3767 4058 4149 4174 4174
50 M 6 6 41 139 345 541 669 640 440 168 39 7 3041
50 S 6 12 53 192 537 1077 1746 2386 2827 2995 3033 3041 3041
55 M 1 1 14 66 210 392 514 485 298 79 12 1 2073
55 S 1 2 16 82 292 684 1197 1683 1981 2060 2072 2073 2073
60 M 0 0 3 21 102 248 359 332 171 26 3 0 1265
60 S 0 0 3 24 126 374 733 1065 1236 1262 1265 1265 1265
Corn Growing Degree Days
50 M 30 42 124 242 405 548 657 634 474 285 122 39 3603
50 S 30 72 197 439 844 1392 2049 2683 3157 3442 3564 3603 3603
Derived form the 1893-2012 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