Recent numerical weather prediction ensembles from agencies including the Finnish Meteorological Institute indicate a cooler air mass and increased cloud cover over southern Finland will limit daytime heating on July 21, keeping maximum temperatures near or slightly below the long-term July average of 20–21 °C. Market-implied odds cluster tightly around 15–17 °C because short-range model runs show modest spread driven by uncertain timing of a weak frontal boundary and variable Baltic Sea breeze effects. Persistent marine layer moisture and limited solar insolation under overcast conditions further suppress peaks, while any clearer breaks could briefly allow 18 °C. Traders weigh these variables against historical July extremes and upcoming high-resolution model updates before resolution.