Recent short-term forecast model runs from agencies including the Finnish Meteorological Institute show substantial uncertainty in Helsinki's overnight minimum on August 23, with projected lows clustered near 11–13°C amid a late-summer transition featuring weakening diurnal heating and variable Baltic airflow. Cloud cover and frontal passages can limit radiative cooling, supporting higher minima around 14°C, while clearer skies or northerly advection of cooler air masses could drop readings toward or below 10°C. Traders assign nearly equal weight to these scenarios because ensemble spread remains wide just 48 hours out, reflecting typical August variability where historical minima average near 11–12°C but can deviate several degrees with modest shifts in pressure gradients or precipitation timing.