Current forecasts from sources including the Finnish Meteorological Institute and ensemble models indicate a likely overnight low near 10–12 °C for Helsinki on September 1, aligning with the historical average of about 11.6 °C and supported by persistent mild southerly flow and limited nocturnal cooling under cloudy, moist conditions. Recent days have featured daytime highs in the upper teens with light rain, keeping the boundary layer warm and reducing the chance of sharp radiational cooling. This setup positions mid-teens values near the center of market-implied probabilities while leaving room for model spread on whether the minimum dips toward single digits or holds higher, with traders weighting official guidance and short-range updates heavily as the date approaches.