JACKSON EXP STN, TENNESSEE

Period of Record General Climate Summary - Growing Degree Days

From Year=1891 To Year=2012
Station:(404561) JACKSON EXP STN
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 128 158 363 607 880 1091 1222 1195 971 650 326 149 7739
40 S 128 285 648 1255 2135 3226 4448 5643 6614 7263 7589 7739 7739
45 M 68 88 245 461 725 941 1067 1040 821 497 212 81 6247
45 S 68 157 401 862 1587 2528 3596 4635 5456 5953 6166 6247 6247
50 M 32 43 150 326 570 791 912 885 671 354 123 38 4895
50 S 32 75 225 551 1121 1912 2825 3709 4380 4734 4857 4895 4895
55 M 13 17 81 208 419 641 757 730 522 228 62 15 3694
55 S 13 31 112 320 738 1379 2137 2866 3388 3616 3678 3694 3694
60 M 4 5 37 115 277 491 602 575 377 127 24 5 2640
60 S 4 9 46 161 438 929 1532 2107 2484 2611 2635 2640 2640
Corn Growing Degree Days
50 M 75 94 218 377 576 743 835 811 646 421 201 84 5082
50 S 75 169 387 764 1340 2083 2918 3729 4375 4796 4998 5082 5082
Derived form the 1891-2012 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