Autumn arrives tomorrow, but it always comes a little later to the southeast than the rest of the country. How summery will the end of September be?

At 853PM, ET, Greenville was reporting a temperature of 70 degrees with overcast skies. In the ever unraveling saga of Nicholas, he is finally being dragged north towards the Eastern Great Lakes, but a plume of remnant moisture extends from western Pennsylvania to central North Carolina. Of more interest is a sharply digging upper level trough that is reaching into the Lower Mississippi Valley this evening. While the remnants of Nicholas are east of the Appalachians, cyclogenesis will be very autumnal thanks to the trough over the next couple of days.
AS the trough rotates a bit and moves east, the latent moisture left by Nicholas will be expressed as widespread showers with some isolated embedded storms. The low generated by the trough is fully evolved, even dropping a cold front that will press through Greenville tomorrow evening. The air behind the front will be dry and refreshing after so many days with rain in the forecast.
Tomorrow – Scattered showers, with thunderstorms more likely in the afternoon and evening. Cooling quickly. High 79, Low 63
Thursday – Sunny and nice, High 76, Low 56

TWC: Tomorrow – Thunderstorms. High 78, Low 64
Thursday – Sunny. Less humid. High 75, Low 54

AW: Tomorrow – Mostly cloudy with a couple of showers and a thunderstorm; much cooler than recent days High 80, Low 64
Thursday – Nice with plenty of sunshine High 75, Low 54

NWS: Tomorrow – A chance of showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 4pm, then a chance of showers and thunderstorms after 4pm. Patchy fog before noon. Otherwise, cloudy, High 79, Low 62
Thursday – Sunny High 76, Low 52

WB: Tomorrow – Cloudy. Patchy fog in the morning. A chance of showers in the morning then showers likely with a chance of thunderstorms in the afternoon. High 78, Low 63
Thursday – Sunny, High 74, Low 56

WN: Tomorrow – Mostly cloudy with light showers and chance of storms, High 79, Low 62
Thursday – Sunny, High 76, Low 53

FIO: Tomorrow – Rain in the morning and afternoon. High 77, Low 63
Thursday – Clear throughout the day. High 77, Low 51

All those lows tomorrow are going to be midnight lows. The coming cold front is going to be pretty aggressive. Just this weak smattering across the area right now.