THE PLAINS 2 NNE, VIRGINIA

Period of Record General Climate Summary - Growing Degree Days

From Year=1954 To Year=2009
Station:(448396) THE PLAINS 2 NNE
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 60 40 149 401 626 961 1103 1083 833 525 222 70 6074
40 S 60 101 250 651 1277 2238 3341 4424 5257 5782 6004 6074 6074
45 M 26 14 79 266 472 811 948 928 683 377 127 27 4757
45 S 26 40 119 385 857 1669 2617 3544 4227 4604 4731 4757 4757
50 M 12 3 39 160 325 661 793 773 533 251 59 9 3617
50 S 12 14 53 213 538 1199 1992 2765 3298 3549 3608 3617 3617
55 M 4 1 15 81 193 511 638 618 383 148 20 2 2613
55 S 4 4 19 100 294 805 1443 2061 2444 2592 2612 2613 2613
60 M 0 0 5 30 97 361 483 463 242 69 4 0 1753
60 S 0 0 5 35 132 493 976 1439 1681 1749 1753 1753 1753
Corn Growing Degree Days
50 M 40 35 106 246 379 636 759 729 536 321 134 47 3967
50 S 40 75 181 427 805 1442 2201 2930 3465 3786 3920 3967 3967
Derived form the 1954-2009 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