Recent numerical weather prediction runs from the Finnish Meteorological Institute and European Centre for Medium-Range Weather Forecasts show a mild maritime air mass over southern Finland on 16 August, supporting daily maxima near 19–22 °C. Cloud cover, modest south-westerly flow, and the timing of any weak frontal boundary introduce the narrow spread between 21 °C and 22 °C that currently anchors trader consensus. These values align with climatological norms for mid-August in Helsinki (long-term mean high ≈ 20 °C) while reflecting the absence of strong high-pressure ridging that would push readings into the mid-20s. Updated model cycles and afternoon observations over the next 48 hours will refine the precise peak, keeping probabilities fluid until the official FMI reading is recorded.