NATCHEZ, MISSISSIPPI

Period of Record General Climate Summary - Growing Degree Days

From Year=1892 To Year=2012
Station:(226177) NATCHEZ
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 335 366 605 794 1028 1185 1290 1289 1110 844 534 358 9737
40 S 335 701 1307 2100 3129 4314 5603 6892 8002 8845 9379 9737 9737
45 M 222 251 457 644 873 1035 1135 1134 960 689 392 236 8027
45 S 222 472 930 1574 2447 3482 4616 5750 6710 7399 7791 8027 8027
50 M 135 155 320 495 718 885 980 979 810 535 265 143 6421
50 S 135 291 611 1106 1824 2709 3689 4668 5478 6013 6278 6421 6421
55 M 74 85 203 352 564 735 825 824 660 387 162 78 4946
55 S 74 159 361 713 1276 2011 2836 3660 4320 4706 4868 4946 4946
60 M 34 39 110 221 410 585 670 669 510 251 85 35 3619
60 S 34 73 183 404 814 1399 2069 2737 3248 3499 3584 3619 3619
Corn Growing Degree Days
50 M 203 223 380 519 702 817 887 881 759 557 335 215 6478
50 S 203 427 806 1325 2027 2844 3731 4612 5371 5928 6263 6478 6478
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