Current forecasts from the National Weather Service place Miami’s May 18 high near the seasonal average of 85 °F, driven by typical late-spring subtropical high pressure, southeasterly flow, and moderate sea-breeze convection that caps afternoon peaks. Ensemble guidance from GFS and ECMWF shows little deviation from climatology, with dew points in the mid-70s limiting extreme heat while allowing the most likely range of 84–89 °F. No tropical systems or strong fronts are expected to alter steering patterns in the next 48 hours, keeping probabilities tightly clustered around these values. Traders are therefore weighting outcomes consistent with verified historical distributions rather than outlier model runs.