Trader consensus assigns nearly equal implied probabilities to 12°C and 13°C highs in Helsinki on October 17, reflecting tight ensemble spread in short-range forecasts from ECMWF, GFS, and regional models. A mild southwesterly flow ahead of an approaching front supports afternoon maxima near these thresholds, while the exact peak hinges on the timing of showers, increasing northerly winds, and cloud breaks that could trim or boost readings by 1°C. Historical October averages near 9°C provide context, but current conditions favor above-normal warmth. Updated model runs and official FMI guidance over the next 48 hours remain the key variables for traders monitoring resolution thresholds.