National Weather Service guidance pegs Atlanta's May 3 high temperature at 69°F under sunny skies, driving trader consensus toward the 68-71°F range as post-frontal cooling from a departing shortwave trough ushers in high pressure and northwesterly winds capping peaks below seasonal norms of 77-78°F. Ensemble forecasts from GFS and ECMWF show tight clustering in the upper 60s to low 70s but diverge by 3-5°F on boundary layer mixing and potential afternoon cumulus clouds, explaining the neck-and-neck implied probabilities across 66-75°F outcomes amid inherent model uncertainty. Watch for 00Z Sunday model runs and NWS updates, which could sharpen resolution before the afternoon peak heating window.