I don’t know how Savannah got it’s name. It’s spelled different than the African savannas. Maybe it’s just because it’s so danged hot, just like a savanna. The extra h is for “humid”.

At 1153AM, ET, Savannah was reporting a temperature of 83 degrees with clear skies and a relatively manageable dew point of 59 degrees. There is a jet streak over the northern Gulf of Mexico which is at present providing the nearest cloud cover, as well as the nearest inclement weather, which is developing over east Texas and promises some headaches before the week is through in Savannah.
Low pressure is developing in East Texas with a jet streak that will phase into a broader jet trough that extends into the Canadian Prairies. Expect Thursday to remain fairly tranquil, if hot and humid, but showers and storms will be primed to arrive on Friday morning. The association with the broader trough will mean less organization in the storms over Georgia, and the pivoting nature of most high amplitude waves will reduce the chance of a real influx of cold air Friday evening. It will still rain and potentially storm a bit, but Friday would be much worse if these two features didn’t merge.
Tomorrow – Mostly sunny, increasing clouds, High 84, Low 63
Friday – Rain, maybe some thunder, generally clearing out in the afternoon, High 82, Low 64

TWC: Tomorrow – Partly cloudy skies in the morning will give way to cloudy skies during the afternoon. High 87, Low 62
Friday – Showers in the morning, then partly cloudy in the afternoon. Thunder possible. High 81, Low 67

AW: Tomorrow – Partly sunny; warm High 87, Low 61
Friday – More clouds than sun, a couple of showers and a thunderstorm; not as hot High 82, Low 65

NWS: Tomorrow – Mostly sunny,High 86, Low 64
Friday – A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7am. Cloudy, High 80, Low 68

WB: Tomorrow – Mostly sunny, High 83, Low 63
Friday – Showers with a chance of thunderstorms, High 83, Low 67

WN: Tomorrow – Mostly sunny, High 86, Low 64
Friday – Mostly cloudy with showers likely, High 80,Low 68

FIO: Tomorrow – Mostly cloudy starting in the afternoon. High 83, Low 61
Friday – Mostly cloudy until afternoon. High 81, Low 66

Forecast.io is so bold as to think this system is going to dissipate before it even arrives on the Georgia Coast. Here is the satellite imagery with clouds over the northern Gulf.