MOUNT LAKE BIOL STN, VIRGINIA

Period of Record General Climate Summary - Growing Degree Days

From Year=1971 To Year=1997
Station:(445828) MOUNT LAKE BIOL STN
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 11 23 98 232 446 662 801 760 536 267 102 35 3971
40 S 11 34 131 364 810 1471 2272 3032 3568 3835 3936 3971 3971
45 M 2 7 45 136 301 512 646 605 389 155 46 13 2857
45 S 2 9 55 191 492 1004 1650 2254 2644 2798 2845 2857 2857
50 M 0 1 16 68 176 365 491 450 250 74 16 3 1910
50 S 0 1 17 85 261 626 1117 1567 1816 1891 1907 1910 1910
55 M 0 0 4 25 84 225 337 296 131 26 3 0 1133
55 S 0 0 4 30 114 339 675 972 1103 1129 1133 1133 1133
60 M 0 0 1 5 26 105 190 155 50 5 0 0 538
60 S 0 0 1 6 33 138 328 482 533 538 538 538 538
Corn Growing Degree Days
50 M 4 12 58 141 258 390 498 461 298 147 54 13 2334
50 S 4 16 74 214 472 863 1361 1822 2119 2266 2320 2334 2334
Derived form the 1971-1997 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