Forecast models from the Finnish Meteorological Institute and global ensembles currently favor a daily maximum of 20–22 °C in Helsinki on August 5, driven by a weak high-pressure ridge and light southerly flow that limits strong warming or cooling. Early-August climatology places average highs near 19–21 °C, providing a tight baseline against which small shifts in cloud cover, wind speed, or frontal timing can move the outcome between 20 °C and 22 °C. With market-implied odds clustered tightly around these three outcomes, traders are weighing the latest model runs for any sign of a brief clearing that could push readings to 22 °C versus increased marine influence or evening showers that would cap the peak at 20 °C. Updated short-range guidance and station observations over the next 48 hours will likely resolve the remaining spread before resolution.