CLARKSVILLE SEWAGE PLT, TENNESSEE

Period of Record General Climate Summary - Growing Degree Days

From Year=1890 To Year=2012
Station:(401790) CLARKSVILLE SEWAGE PLT
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 106 129 325 574 850 1069 1218 1183 951 624 294 126 7449
40 S 106 235 559 1134 1984 3053 4271 5454 6405 7029 7323 7449 7449
45 M 55 69 213 431 695 919 1063 1028 801 473 185 65 5997
45 S 55 123 336 767 1463 2381 3445 4473 5274 5747 5932 5997 5997
50 M 25 32 127 299 541 769 908 873 652 330 103 29 4688
50 S 25 57 184 483 1024 1793 2701 3574 4226 4556 4659 4688 4688
55 M 10 12 67 187 391 619 753 718 503 207 49 11 3526
55 S 10 22 89 276 666 1285 2039 2756 3259 3466 3515 3526 3526
60 M 3 3 29 101 253 469 598 563 359 112 18 2 2511
60 S 3 6 35 137 389 858 1457 2020 2379 2491 2509 2511 2511
Corn Growing Degree Days
50 M 64 82 204 360 550 720 825 798 627 398 183 73 4884
50 S 64 146 350 710 1260 1979 2804 3602 4229 4627 4810 4884 4884
Derived form the 1890-2012 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