WINCHESTER 3 ESE, VIRGINIA

Period of Record General Climate Summary - Growing Degree Days

From Year=1912 To Year=2012
Station:(449186) WINCHESTER 3 ESE
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 50 170 401 707 935 1096 1043 811 493 206 60 6018
40 S 47 97 267 668 1374 2309 3405 4449 5260 5753 5959 6018 6018
45 M 21 21 95 269 552 785 941 888 661 346 116 25 4721
45 S 21 42 137 406 958 1743 2684 3573 4234 4580 4696 4721 4721
50 M 8 8 48 163 401 635 786 733 512 218 55 9 3576
50 S 8 16 64 227 629 1263 2049 2783 3294 3512 3567 3576 3576
55 M 2 2 21 88 263 485 631 578 366 118 21 2 2580
55 S 2 5 26 114 377 863 1494 2072 2438 2556 2577 2580 2580
60 M 0 0 8 40 150 339 476 424 235 52 6 1 1730
60 S 0 1 9 49 199 538 1014 1438 1672 1724 1730 1730 1730
Corn Growing Degree Days
50 M 31 36 114 250 441 617 740 700 521 298 121 37 3904
50 S 31 66 180 429 870 1487 2227 2927 3448 3746 3867 3904 3904
Derived form the 1912-2012 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