Latest National Weather Service model runs support an upper-80s high in Austin today, driven by a warm, dry air mass under high pressure with mostly sunny skies and light southerly winds that promote strong daytime heating but limit further intensification. Ensemble guidance shows temperatures likely peaking near 88–89°F at Austin-Bergstrom International Airport, consistent with the market-implied 76.5% probability for that bin and only a modest 24% chance for 90°F or higher. This aligns with mid-May climatology near 86°F while reflecting slight model cooling from earlier runs that had briefly favored low-90s readings. Updated forecasts from the National Weather Service and continued surface observations will determine final resolution.