**Clearing skies and light northerly winds after recent showers are the main drivers of trader uncertainty for Dallas’s October 5 minimum temperature.** Forecasts from multiple sources (WeatherBug, NWS-derived products, and others as of October 3) show high pressure building with sunny to mostly clear conditions on the 5th, allowing strong radiational cooling overnight. This setup typically produces lows in the low-to-mid 60s°F, close to or slightly above early-October climatological normals of ~58–63°F. However, model spreads on exact clearing timing, dew-point recovery, and boundary-layer winds create a wide range of possible minima—from the upper 50s (if skies clear earlier and winds remain light) to the mid-60s (if moisture lingers or winds stay slightly stronger). Recent showers through October 3–4 have left residual soil moisture that could modestly limit overnight cooling, while the shift to northerly flow favors drier air and clearer skies. With market-implied probabilities split across buckets (e.g., 57°F or below at 49.5% alongside several mid-60s ranges near 34–46.5%), traders appear to be pricing in genuine forecast uncertainty rather than a strong consensus on any single threshold. New NWS model runs and updated guidance over the next 24–48 hours will be the key catalysts likely to move the market.