ST AUGUSTINE, FLORIDA

Period of Record General Climate Summary - Growing Degree Days

From Year=1892 To Year=1973
Station:(087812) ST AUGUSTINE
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 545 528 722 865 1069 1171 1265 1267 1169 1012 723 571 10905
40 S 545 1072 1794 2659 3728 4899 6164 7431 8599 9611 10334 10905 10905
45 M 397 390 568 715 914 1021 1110 1112 1019 857 574 421 9097
45 S 397 787 1355 2070 2984 4005 5115 6227 7246 8102 8676 9097 9097
50 M 263 263 418 565 759 871 955 957 869 702 428 282 7331
50 S 263 526 944 1509 2268 3139 4094 5051 5920 6621 7049 7331 7331
55 M 151 156 279 416 604 721 800 802 719 547 289 164 5648
55 S 151 307 586 1002 1606 2327 3127 3929 4647 5195 5484 5648 5648
60 M 70 77 159 272 449 571 645 647 569 395 168 78 4099
60 S 70 147 306 578 1027 1598 2242 2890 3458 3853 4021 4099 4099
Corn Growing Degree Days
50 M 319 315 451 569 741 827 893 898 838 699 457 339 7345
50 S 319 634 1084 1653 2395 3222 4115 5013 5851 6550 7007 7345 7345
Derived form the 1892-1973 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