JACKSON 4 NW, MISSISSIPPI

Period of Record General Climate Summary - Growing Degree Days

From Year=1930 To Year=1971
Station:(224467) JACKSON 4 NW
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 291 325 521 756 1016 1186 1301 1283 1088 806 462 314 9349
40 S 291 616 1137 1893 2909 4095 5397 6679 7768 8573 9035 9349 9349
45 M 187 215 379 606 861 1036 1146 1128 938 651 326 196 7669
45 S 187 402 781 1387 2248 3284 4430 5558 6496 7147 7473 7669 7669
50 M 110 127 253 458 706 886 991 973 788 498 210 109 6109
50 S 110 237 490 948 1654 2540 3532 4504 5293 5791 6001 6109 6109
55 M 59 66 151 318 551 736 836 818 639 352 120 54 4698
55 S 59 125 276 593 1144 1881 2717 3535 4173 4525 4645 4698 4698
60 M 27 29 77 195 398 586 681 663 489 221 58 22 3445
60 S 27 55 132 326 724 1311 1992 2655 3144 3365 3423 3445 3445
Corn Growing Degree Days
50 M 176 196 323 485 686 804 882 866 734 529 292 189 6161
50 S 176 372 695 1180 1866 2670 3552 4418 5152 5680 5972 6161 6161
Derived form the 1930-1971 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