Traders see the highest temperature in Atlanta on July 15 most likely falling between 86–89°F, with those two buckets nearly tied at roughly one-third each, reflecting modest uncertainty in the latest National Weather Service model runs. Mid-July climatology favors southerly flow under a ridge that typically supports highs in the mid-to-upper 80s, but subtle differences in forecast timing of any weak front, afternoon convection, or boundary-layer mixing could nudge the maximum a degree or two higher or lower. Ensemble spreads of several degrees underscore the normal variability in short-range temperature guidance, with updated model cycles and surface observations tomorrow expected to narrow the range before market resolution.