Forecast models from major centers, including GFS runs, indicate a mild autumn day in Amsterdam on October 4 driven by high pressure near 1030 hPa and light variable winds that limit cooling. Afternoon temperatures are projected to reach 17–19 °C under partly cloudy skies, with minimal precipitation risk and dew points supporting modest daytime warming above the 16.6 °C climatological average. This setup positions 19–20 °C as the market-implied favorites, reflecting trader consensus on model consensus and recent observational trends of above-normal early-October warmth. Minor uncertainties in cloud cover or wind direction could shift the exact maximum by 1 °C, but current guidance keeps extremes below 18 °C or above 21 °C at low implied probabilities. Updated model runs and KNMI briefings remain the key near-term catalysts.