SAVANNAH USDA PLANT GD, GEORGIA

Period of Record General Climate Summary - Growing Degree Days

From Year=1928 To Year=1977
Station:(097842) SAVANNAH USDA PLANT GD
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 357 361 571 743 993 1134 1245 1235 1075 816 513 349 9394
40 S 357 719 1290 2033 3026 4160 5405 6641 7716 8532 9045 9394 9394
45 M 237 242 423 593 838 984 1090 1080 925 661 372 224 7670
45 S 237 480 903 1496 2334 3318 4408 5488 6413 7075 7446 7670 7670
50 M 144 146 289 445 683 834 935 925 775 507 247 129 6058
50 S 144 289 578 1023 1706 2539 3475 4400 5175 5683 5929 6058 6058
55 M 76 77 176 303 528 684 780 770 625 358 146 65 4587
55 S 76 153 328 631 1159 1843 2623 3393 4019 4377 4522 4587 4587
60 M 32 33 93 177 375 534 625 615 475 222 70 26 3278
60 S 32 66 158 336 710 1244 1869 2484 2960 3182 3252 3278 3278
Corn Growing Degree Days
50 M 234 237 369 483 663 771 854 847 740 541 339 231 6308
50 S 234 470 839 1322 1985 2756 3610 4456 5197 5738 6077 6308 6308
Derived form the 1928-1977 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