JAMESTOWN, TENNESSEE

Period of Record General Climate Summary - Growing Degree Days

From Year=1951 To Year=2012
Station:(404590) JAMESTOWN
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 82 71 272 470 717 948 1043 1055 810 485 245 74 6272
40 S 82 153 425 894 1612 2560 3603 4658 5468 5954 6199 6272 6272
45 M 39 30 172 334 564 798 888 900 660 343 141 34 4903
45 S 39 69 241 575 1139 1937 2825 3725 4385 4728 4869 4903 4903
50 M 15 10 99 217 417 648 733 745 510 216 65 13 3689
50 S 15 25 124 341 758 1407 2140 2885 3395 3611 3676 3689 3689
55 M 5 3 47 124 281 498 578 590 363 117 22 4 2632
55 S 5 8 55 179 460 959 1537 2127 2490 2607 2628 2632 2632
60 M 1 0 18 60 163 348 423 436 224 47 5 1 1726
60 S 1 1 19 78 241 589 1013 1449 1673 1720 1725 1726 1726
Corn Growing Degree Days
50 M 47 50 173 298 450 641 720 722 516 303 153 44 4118
50 S 47 97 270 568 1017 1658 2379 3101 3617 3921 4074 4118 4118
Derived form the 1951-2012 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