CLARKSDALE, MISSISSIPPI

Period of Record General Climate Summary - Growing Degree Days

From Year=1892 To Year=2012
Station:(221707) CLARKSDALE
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 178 221 443 707 984 1183 1300 1274 1060 759 403 209 8721
40 S 178 399 842 1549 2533 3716 5016 6290 7350 8108 8512 8721 8721
45 M 102 132 310 559 829 1033 1145 1119 910 604 274 120 7137
45 S 102 234 544 1102 1931 2964 4109 5228 6138 6742 7016 7137 7137
50 M 51 69 197 414 674 883 990 964 760 454 166 61 5682
50 S 51 120 317 731 1404 2287 3277 4242 5001 5455 5622 5682 5682
55 M 22 30 110 279 519 733 835 809 610 313 88 26 4374
55 S 22 52 161 440 959 1692 2527 3337 3947 4260 4348 4374 4374
60 M 7 9 50 164 369 583 680 654 462 192 38 9 3218
60 S 7 17 67 231 600 1183 1863 2517 2979 3171 3209 3218 3218
Corn Growing Degree Days
50 M 101 125 260 442 656 806 885 866 713 487 240 114 5695
50 S 101 226 486 928 1583 2389 3274 4140 4853 5340 5580 5695 5695
Derived form the 1892-2012 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