Recent forecasts from multiple models indicate a mild overnight minimum for Helsinki on August 31, with most guidance centering on 14–16 °C under cloudy skies, scattered showers, and southwesterly flow that limits radiative cooling. Persistent cloud cover and precipitation expected through the period have kept surface temperatures elevated relative to historical late-August averages (near 12 °C), reducing the likelihood of a sharp drop below 12 °C. Model consensus remains tight on this range, though small shifts in timing or intensity of the rain could still allow a brief dip toward 11 °C or lower if clearer breaks develop after midnight. These conditions explain the market’s heavy weighting toward the 11 °C or below outcome alongside substantial volume on 14 °C, reflecting traders’ focus on the balance between modest cooling potential and the stabilizing effect of Atlantic moisture. Updated runs from the Finnish Meteorological Institute and ECMWF overnight will provide the next key signal before resolution.