Trader consensus overwhelmingly favors a Miami high of 76-77°F on March 19, driven by the latest National Weather Service forecast predicting a daytime maximum around 76°F under partly cloudy skies with light northeast winds following a cool front. Ensemble models from NOAA's GFS and ECMWF align closely, showing persistent mid-70s temperatures amid cooler-than-average March conditions, consistent with recent sea surface temperatures in the mid-70s°F off South Florida. Historical data supports this, as Miami's March 19 average high is 79°F, but frontal passages often cap peaks 2-4°F below normal. Realistic challenges include a stalled front allowing warm advection from the south or sunny skies boosting boundary layer heating beyond model projections, though low-probability convective activity could temper extremes.