**Forecast uncertainty around typical late-August minima is driving evenly matched market odds across temperature bins for Helsinki's lowest temperature on August 28.** Current short-range models from sources including the Finnish Meteorological Institute and global ensembles point to overnight lows near 13–15°C, consistent with the 1991–2020 climatological average of 12.1°C for the date. Key differentiating factors include variable cloud cover and wind patterns that modulate radiative cooling, with recent days showing mild conditions and light precipitation that could either suppress or allow slightly lower readings depending on timing. Higher-resolution updates expected from ECMWF and local agencies over the next 48 hours will likely sharpen the range, as steering patterns and boundary-layer moisture remain the dominant variables in this coastal setting. Trader consensus reflects this genuine forecast spread rather than any single outlier scenario.