SULLIVANS ISLAND, SOUTH CAROLINA

Period of Record General Climate Summary - Growing Degree Days

From Year=1951 To Year=2012
Station:(388405) SULLIVANS ISLAND
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 297 317 532 747 1014 1168 1290 1275 1102 870 583 378 9573
40 S 297 614 1145 1892 2906 4074 5364 6639 7741 8611 9194 9573 9573
45 M 177 196 382 597 859 1018 1135 1120 952 715 435 244 7830
45 S 177 373 755 1352 2211 3229 4364 5484 6436 7151 7586 7830 7830
50 M 88 101 245 448 704 868 980 965 802 561 295 136 6192
50 S 88 189 434 882 1586 2454 3434 4399 5201 5761 6056 6192 6192
55 M 33 39 132 303 549 718 825 810 652 408 174 62 4705
55 S 33 73 205 507 1057 1774 2600 3410 4061 4470 4644 4705 4705
60 M 8 9 52 173 395 568 670 655 502 264 83 20 3399
60 S 8 17 69 241 637 1204 1875 2530 3031 3295 3378 3399 3399
Corn Growing Degree Days
50 M 147 159 292 464 698 834 924 914 786 568 339 200 6323
50 S 147 305 598 1061 1759 2593 3516 4430 5217 5785 6124 6323 6323
Derived form the 1951-2012 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