Recent short-range forecasts from the Finnish Meteorological Institute and European models point to a daily maximum near 20°C in Helsinki on July 25, with 19–21°C outcomes holding the bulk of market-implied probability due to modest ensemble spread. Key drivers include variable low-level cloud cover reducing insolation, weak southerly advection of slightly warmer Baltic air, and the potential timing of a weak frontal passage that could cap or boost afternoon temperatures by 1–2°C. July climatology places the average high near 21°C, so current conditions sit close to seasonal norms while model disagreement on boundary-layer mixing and radiative effects sustains the tight clustering around the central bins. Updated runs from national weather services in the next 48 hours will likely narrow the distribution ahead of market resolution.