GRAYSON 3 SW, KENTUCKY

Period of Record General Climate Summary - Growing Degree Days

From Year=1925 To Year=2001
Station:(153391) GRAYSON 3 SW
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 44 63 167 388 671 903 1065 1020 779 445 176 73 5795
40 S 44 107 274 662 1333 2237 3302 4322 5101 5546 5722 5795 5795
45 M 19 27 92 260 517 753 910 865 629 305 99 35 4511
45 S 19 46 137 397 914 1668 2578 3443 4072 4377 4475 4511 4511
50 M 7 10 43 156 369 603 755 710 480 185 48 15 3382
50 S 7 16 60 216 585 1189 1944 2654 3134 3319 3367 3382 3382
55 M 2 3 17 84 236 454 600 555 337 96 17 5 2407
55 S 2 5 22 106 342 796 1396 1951 2288 2384 2401 2407 2407
60 M 1 0 6 36 129 310 445 401 209 41 4 1 1583
60 S 1 1 7 43 172 482 927 1328 1537 1578 1582 1583 1583
Corn Growing Degree Days
50 M 36 57 138 274 440 593 715 679 508 312 135 54 3941
50 S 36 92 230 505 945 1538 2252 2931 3440 3752 3887 3941 3941
Derived form the 1925-2001 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