HILTON HEAD, SOUTH CAROLINA

Period of Record General Climate Summary - Growing Degree Days

From Year=1953 To Year=1998
Station:(384169) HILTON HEAD
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 302 350 563 750 996 1128 1262 1240 1085 848 565 366 9454
40 S 302 652 1215 1965 2961 4089 5351 6591 7675 8523 9088 9454 9454
45 M 182 229 413 601 841 978 1107 1085 935 693 418 236 7716
45 S 182 412 824 1425 2266 3243 4350 5435 6370 7063 7481 7716 7716
50 M 94 133 275 451 686 828 952 930 785 538 281 133 6086
50 S 94 227 502 953 1639 2467 3419 4348 5133 5672 5953 6086 6086
55 M 40 65 159 306 531 678 797 775 635 386 166 64 4602
55 S 40 105 264 570 1101 1779 2576 3351 3985 4372 4538 4602 4602
60 M 13 24 74 176 377 528 642 620 485 245 81 24 3288
60 S 13 37 111 287 664 1192 1834 2454 2939 3184 3265 3288 3288
Corn Growing Degree Days
50 M 170 202 334 473 677 795 894 881 769 554 341 211 6301
50 S 170 372 706 1179 1856 2651 3545 4427 5196 5749 6090 6301 6301
Derived form the 1953-1998 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