COVINGTON FILTER PLANT, VIRGINIA

Period of Record General Climate Summary - Growing Degree Days

From Year=1960 To Year=2012
Station:(442044) COVINGTON FILTER PLANT
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 54 73 228 454 722 917 1061 1033 803 499 225 77 6146
40 S 54 127 355 810 1532 2449 3509 4543 5345 5845 6069 6146 6146
45 M 23 32 131 316 567 767 906 878 653 351 126 34 4784
45 S 23 55 186 502 1069 1836 2742 3620 4273 4624 4750 4784 4784
50 M 8 11 64 197 415 617 751 723 503 218 58 13 3579
50 S 8 19 83 280 695 1312 2062 2786 3289 3508 3566 3579 3579
55 M 2 3 25 107 271 467 596 568 356 115 21 3 2533
55 S 2 4 30 137 408 875 1471 2039 2396 2510 2531 2533 2533
60 M 0 0 8 46 150 320 441 414 222 46 5 0 1652
60 S 0 0 8 54 204 524 965 1378 1600 1647 1652 1652 1652
Corn Growing Degree Days
50 M 41 62 171 309 469 603 706 690 519 334 160 56 4120
50 S 41 103 275 583 1052 1655 2361 3051 3570 3904 4064 4120 4120
Derived form the 1960-2012 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