ASHLAND 1 SW, VIRGINIA

Period of Record General Climate Summary - Growing Degree Days

From Year=1893 To Year=2012
Station:(440327) ASHLAND 1 SW
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 80 94 258 496 770 972 1133 1090 868 549 260 101 6670
40 S 80 173 432 928 1698 2670 3802 4892 5760 6310 6569 6670 6670
45 M 39 47 158 356 615 822 978 935 718 399 156 50 5272
45 S 39 86 243 599 1214 2036 3014 3949 4666 5066 5221 5272 5272
50 M 16 20 87 232 461 672 823 780 568 262 81 22 4024
50 S 16 37 123 356 817 1489 2311 3091 3659 3921 4003 4024 4024
55 M 6 7 42 136 316 522 668 625 420 150 35 8 2933
55 S 6 13 55 190 506 1028 1696 2321 2740 2891 2926 2933 2933
60 M 2 2 17 69 189 374 513 470 280 71 11 2 1999
60 S 2 3 21 89 278 652 1164 1635 1915 1986 1997 1999 1999
Corn Growing Degree Days
50 M 52 65 170 313 488 653 779 747 567 335 161 63 4393
50 S 52 117 287 600 1087 1740 2520 3267 3834 4169 4330 4393 4393
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