Forecasts from global and regional models place Warsaw's August 28 maximum near 25–28 °C under building high pressure that advects warmer southeasterly air, yet an approaching Atlantic front introduces uncertainty in cloud cover and timing of any cooling. Official guidance from IMGW and ensemble runs highlight variable daytime heating tied to exact insolation, boundary-layer mixing, and whether scattered convection develops before peak afternoon temperatures. With all outcome bins near even odds, traders reflect genuine spread across model solutions rather than consensus on a narrow range, especially given the two-day horizon and sensitivity to small shifts in frontal position or wind strength. Updated runs and local observations will likely tighten implied probabilities ahead of resolution.