Sumter is sort of an in between town. It’s not a coastal town, but it’s not very far inland either. What is the leading factor in the weather in Sumter? I reckon’ we’re about to find out.

At 1055AM, ET, Sumter was reporting a temperature of 81 degrees with sunny skies. After a muggy weekend, an unseasonably strong cold front has swept unpleasantness off the coast, and high pressure has built into the Carolinas.
The remnant boundary will lay astride of the coast, and within the convective remainder, a tropical wave will become involved and briefly intensify before pulling the dry continental air further into South Carolina, and the showers and storms at sea further into the Sargasso. All the while, Sumter looks to enjoy a whole lot of sunshine.
Tomorrow – Mostly sunny, High 89, Low 65
Saturday – Hot but clear, High 90, low 64

TWC: Tomorrow – Sunshine and clouds mixed. High 88, low 66
Saturday – Plentiful sunshine High 89, Low 65

AW: Tomorrow – Intervals of clouds and sunshine High 87, Low 66
Saturday – Mostly sunny High 89, Low 65

NWS: Tomorrow – Partly sunny High 88, Low 67
Saturday – Mostly sunny, High 89, low 65

WB: Tomorrow – Partly sunny High 87, Low 68
Saturday – Mostly sunny, High 87, low 67

WN: Tomorrow – Partly cloudy High 88, Low 67
Saturday – Mostly sunny, High 89, low 65

FIO: Tomorrow – Mostly cloudy throughout the day. High 88, Low 69
Saturday – Partly cloudy throughout the day. High 89, Low 67

All told, especially after this past week, that’s not really a bad outlook for South Carolina. Here is a look at the western Atlantic satellite, showing the instability off shore.