CHARLESTON WSO CITY, SOUTH CAROLINA

Period of Record General Climate Summary - Growing Degree Days

From Year=1897 To Year=2012
Station:(381549) CHARLESTON WSO CITY
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 325 351 562 770 1029 1173 1302 1278 1108 875 592 392 9756
40 S 325 676 1238 2008 3036 4209 5511 6789 7897 8772 9364 9756 9756
45 M 203 228 412 620 874 1023 1147 1123 958 720 444 257 8008
45 S 203 431 843 1463 2336 3359 4506 5629 6587 7307 7751 8008 8008
50 M 109 129 273 470 719 873 992 968 808 566 305 147 6358
50 S 109 238 511 981 1699 2572 3564 4533 5340 5906 6211 6358 6358
55 M 48 60 156 324 564 723 837 813 658 413 184 71 4850
55 S 48 108 263 588 1151 1874 2711 3525 4182 4595 4779 4850 4850
60 M 15 20 70 192 409 573 682 658 508 268 90 27 3511
60 S 15 35 105 297 706 1279 1961 2619 3127 3395 3485 3511 3511
Corn Growing Degree Days
50 M 149 166 300 475 712 848 948 933 798 568 330 189 6417
50 S 149 315 615 1090 1802 2650 3598 4531 5329 5898 6228 6417 6417
Derived form the 1897-2012 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