**Observed temperatures at Miami International Airport (KMIA) reached a daily maximum of 90.0°F on June 12, 2026, according to National Weather Service hourly reports, driving the near-certain market consensus on the 90–91°F bracket.** Typical early-June conditions in South Florida feature a climatological normal high near 89°F, supported by ample solar heating under partly cloudy skies and light winds, though afternoon sea-breeze convection and scattered thunderstorms often cap peaks by introducing cloud cover and evaporative cooling. Recent model guidance had pointed to upper-80s readings, but delayed or isolated convective activity allowed brief warming to the low 90s before storms developed. The official station data leaves little room for revision, as resolution relies on verified KMIA observations; only a rare station malfunction or post-event data correction would alter the outcome.