JACKSON, KENTUCKY

Period of Record General Climate Summary - Growing Degree Days

From Year=1894 To Year=1984
Station:(154196) JACKSON
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 67 71 246 459 760 959 1105 1087 880 530 243 97 6505
40 S 67 138 385 844 1603 2562 3667 4754 5634 6164 6407 6505 6505
45 M 32 33 150 322 605 809 950 932 730 383 144 48 5139
45 S 32 65 215 537 1142 1951 2901 3833 4563 4946 5091 5139 5139
50 M 13 13 81 205 453 659 795 777 580 254 75 20 3925
50 S 13 26 107 312 765 1424 2219 2996 3576 3830 3905 3925 3925
55 M 4 4 37 116 309 509 640 622 432 146 31 6 2857
55 S 4 8 44 160 469 979 1619 2241 2673 2820 2851 2857 2857
60 M 1 1 14 54 183 362 485 467 293 68 9 1 1938
60 S 1 1 15 69 252 614 1099 1566 1859 1927 1937 1938 1938
Corn Growing Degree Days
50 M 48 57 179 310 493 636 747 737 577 353 170 68 4375
50 S 48 105 284 594 1087 1724 2471 3208 3785 4138 4308 4375 4375
Derived form the 1894-1984 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