National Weather Service and private model guidance currently point to a high near 85–86°F in Atlanta on May 17, driven by southerly flow and mostly sunny skies ahead of a weak front. This places the market’s two leading bins—86–87°F at 36 percent and 84–85°F at 32 percent—in close contention, reflecting small differences in how models resolve afternoon mixing and any minor timing shift in the frontal passage. Typical mid-May highs at Hartsfield-Jackson Airport average 80–82°F, so the current warm-air advection represents a modest positive anomaly. Updated forecast discussions and afternoon observations on the 17th will determine final resolution, with limited upside risk above 89°F under the prevailing pattern.