Current forecast guidance from the Finnish Meteorological Institute and European models points to a minimum temperature of 13–15°C in Helsinki on September 9, driven by mild southwesterly flow, high humidity, and widespread cloud cover that limits overnight radiative cooling. Daytime highs reached 17–18°C under mostly cloudy skies with scattered showers, while the overnight low is tracking near 14°C as of late evening. These conditions align closely with historical September norms but sit above the long-term average low of 10.3°C, keeping 13°C and 15°C as the dominant market outcomes with nearly equal implied probabilities. No sharp cold-air advection or clear-sky radiational cooling is expected before midnight, though minor model spread in boundary-layer mixing could shift the exact minimum by 1–2°C.