National Weather Service guidance and ensemble models indicate Atlanta will likely see a high near 97–99°F on August 17 under a persistent high-pressure ridge and heat dome, with mostly sunny skies, light winds, and minimal cloud cover maximizing daytime radiative heating. Dew points in the mid-70s will support heat indices above 105°F but also raise the chance of isolated late-day thunderstorms that could briefly limit peak readings. These conditions align with the market’s tight clustering around 98–99°F and 96–97°F bins, reflecting uncertainty in exact convective timing and boundary-layer mixing rather than major shifts in the synoptic pattern. Updated NWS and model runs tomorrow morning will provide the final resolution data.