JACKSON FCWOS AP, TENNESSEE

Period of Record General Climate Summary - Growing Degree Days

From Year=1948 To Year=2012
Station:(404556) JACKSON FCWOS AP
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 119 160 360 624 905 1107 1245 1209 960 651 323 153 7816
40 S 119 279 639 1263 2168 3275 4520 5729 6689 7341 7664 7816 7816
45 M 66 91 239 478 750 957 1090 1054 810 498 210 85 6328
45 S 66 156 396 874 1623 2581 3671 4725 5535 6033 6243 6328 6328
50 M 32 46 145 340 595 807 935 899 660 352 122 41 4974
50 S 32 78 222 562 1157 1964 2900 3799 4458 4810 4933 4974 4974
55 M 13 18 77 219 441 657 780 744 510 224 62 16 3764
55 S 13 32 109 329 770 1427 2208 2951 3462 3686 3748 3764 3764
60 M 4 5 34 124 296 507 625 589 365 123 25 5 2704
60 S 4 9 43 167 464 971 1596 2185 2550 2674 2699 2704 2704
Corn Growing Degree Days
50 M 70 97 218 391 595 756 851 818 638 417 197 86 5134
50 S 70 167 385 776 1371 2127 2978 3796 4434 4851 5048 5134 5134
Derived form the 1948-2012 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