LONDON FAA AIRPORT, KENTUCKY

Period of Record General Climate Summary - Growing Degree Days

From Year=1954 To Year=2012
Station:(154898) LONDON FAA AIRPORT
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 64 94 256 494 749 946 1092 1061 834 507 244 102 6444
40 S 64 158 414 908 1657 2603 3695 4757 5590 6097 6341 6444 6444
45 M 29 46 158 356 594 796 937 906 684 360 146 51 5063
45 S 29 74 233 588 1183 1979 2916 3822 4506 4865 5012 5063 5063
50 M 11 19 87 234 442 646 782 751 534 231 76 22 3834
50 S 11 29 116 350 792 1438 2220 2972 3506 3736 3813 3834 3834
55 M 3 5 40 137 299 496 627 596 387 126 32 7 2758
55 S 3 9 49 186 485 982 1609 2205 2592 2718 2751 2758 2758
60 M 1 1 14 66 174 348 472 441 250 54 10 1 1834
60 S 1 1 16 82 256 604 1077 1518 1768 1823 1833 1834 1834
Corn Growing Degree Days
50 M 37 62 163 309 475 637 756 727 542 316 151 58 4235
50 S 37 99 263 572 1047 1684 2440 3168 3710 4025 4177 4235 4235
Derived form the 1954-2012 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