Trader consensus on Polymarket reflects tight clustering around 9–10°C for Warsaw's highest temperature on April 8, driven by the latest ECMWF and GFS ensemble means projecting daytime highs near 10°C under partly cloudy conditions with light winds and low precipitation risk. This positioning stems from a recent cooling trend in model guidance, as mild Atlantic air gives way to a weak northwest front capping boundary layer mixing and potential solar heating, per IMGW and Yr.no updates over the past 48 hours showing maxes of 9–11°C. Differentiating factors include cloud cover variability and exact front timing—clearer skies could push toward 11°C+, while thicker overcast favors 9°C or below. New 12z runs from ECMWF tomorrow will clarify amid typical early-April uncertainty, with climatological highs averaging 11°C.