NORRIS, TENNESSEE

Period of Record General Climate Summary - Growing Degree Days

From Year=1935 To Year=2012
Station:(406619) NORRIS
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 69 98 285 509 764 959 1101 1090 878 553 242 86 6634
40 S 69 168 452 961 1725 2685 3786 4876 5754 6306 6549 6634 6634
45 M 29 46 174 367 610 809 946 935 728 402 140 38 5223
45 S 29 75 249 617 1226 2035 2981 3916 4644 5046 5186 5223 5223
50 M 11 17 93 239 456 659 791 780 578 263 68 14 3971
50 S 11 28 121 361 817 1476 2268 3047 3626 3889 3957 3971 3971
55 M 3 5 41 135 310 509 636 625 430 148 26 3 2871
55 S 3 8 49 184 494 1003 1639 2264 2694 2842 2868 2871 2871
60 M 0 1 13 61 180 361 481 470 287 65 6 0 1925
60 S 0 1 14 75 255 616 1097 1567 1854 1919 1925 1925 1925
Corn Growing Degree Days
50 M 41 72 195 333 493 644 753 746 575 352 157 52 4412
50 S 41 113 308 642 1135 1779 2531 3277 3852 4204 4360 4412 4412
Derived form the 1935-2012 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