LOUISVILLE WSO AIRPORT, KENTUCKY

Period of Record General Climate Summary - Growing Degree Days

From Year=1948 To Year=2012
Station:(154954) LOUISVILLE WSO 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 66 88 253 517 810 1037 1189 1152 902 571 253 95 6934
40 S 66 154 407 924 1735 2772 3961 5113 6015 6586 6839 6934 6934
45 M 32 43 157 377 656 887 1034 997 752 421 155 47 5557
45 S 32 75 231 608 1264 2151 3185 4182 4934 5355 5510 5557 5557
50 M 14 17 87 252 502 737 879 842 602 283 84 21 4321
50 S 14 31 119 371 873 1610 2489 3331 3933 4216 4300 4321 4321
55 M 5 5 43 152 354 587 724 687 454 169 38 8 3227
55 S 5 10 54 206 560 1147 1871 2558 3012 3181 3219 3227 3227
60 M 1 1 18 80 222 438 569 532 312 85 13 2 2274
60 S 1 2 20 100 323 761 1329 1861 2174 2259 2272 2274 2274
Corn Growing Degree Days
50 M 36 51 147 310 515 709 827 795 593 341 138 47 4508
50 S 36 87 233 543 1058 1768 2594 3389 3982 4323 4461 4508 4508
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