GRAY HAWK, KENTUCKY

Period of Record General Climate Summary - Growing Degree Days

From Year=1972 To Year=1999
Station:(153382) GRAY HAWK
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 40 67 174 364 625 857 1021 977 739 397 182 71 5513
40 S 40 107 281 645 1270 2127 3148 4124 4864 5260 5442 5513 5513
45 M 17 31 97 242 472 707 866 822 589 261 105 34 4242
45 S 17 48 146 387 859 1566 2432 3253 3843 4104 4208 4242 4242
50 M 6 12 46 145 328 557 711 667 442 151 50 14 3126
50 S 6 17 64 209 537 1093 1804 2471 2912 3063 3113 3126 3126
55 M 1 3 19 74 202 408 556 512 301 72 18 5 2170
55 S 1 4 23 97 299 708 1263 1775 2076 2148 2166 2170 2170
60 M 0 0 6 27 104 266 401 358 177 27 4 1 1372
60 S 0 0 7 34 138 404 805 1163 1340 1367 1371 1372 1372
Corn Growing Degree Days
50 M 27 54 132 247 401 564 689 651 474 271 127 48 3687
50 S 27 81 214 461 862 1427 2116 2767 3241 3512 3639 3687 3687
Derived form the 1972-1999 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