Trader consensus on Polymarket favors 82-83°F (37%) as Miami's highest temperature on March 27, closely followed by 80-81°F (27%), reflecting the latest National Weather Service (NWS) forecast guidance indicating a high near 83°F under partly cloudy skies with light southerly winds. Recent developments include a departing cool front on March 25 that cleared lingering clouds, allowing a building upper-level ridge over Florida to promote daytime heating, with sea surface temperatures around 78°F supporting mild warmth. Ensemble model runs from GFS and ECMWF show tight clustering around 82°F, above the March climatological average of 80°F, though diel timing and any late-afternoon sea breeze could cap peaks. New 12Z forecast updates expected midday March 27 may refine these market-implied odds amid inherent model uncertainty.