Recent GFS-based forecasts show a stable high-pressure ridge over northern Europe delivering mostly clear skies, light northerly winds, and minimal cloud interference for Paris on October 5, supporting afternoon peaks near 24–25 °C. This setup favors efficient solar heating under stable subsidence, pushing the daily maximum into the 25–26 °C range that currently commands over two-thirds of market-implied probability. Subtle model spread arises from small variations in boundary-layer mixing depth and exact timing of any residual high cloud, which could shift the peak by 1 °C either way. Ensemble guidance and climatological baselines (October averages ~18–20 °C) reinforce the current trader consensus while highlighting sensitivity to the next model cycle.