Recent National Weather Service and model guidance for Chicago points to a high in the mid-60s on October 2, driven by northerly winds behind a frontal passage and clearing skies after October 1 showers. This setup favors 64–67°F readings, aligning with the market’s heaviest concentration on 66–67°F at 47% implied probability. The projected high sits several degrees below the early-October climatological average of roughly 69–70°F, reflecting the cool air mass in place. Short-range model consensus remains tight, though minor shifts in wind timing or cloud cover could nudge the peak by a degree or two before resolution.