Recent National Weather Service and private forecast models indicate Chicago will experience mostly sunny conditions on October 6 under a building ridge, with southerly winds of 10-15 mph potentially advecting milder air northward ahead of a weak front. Ensemble guidance and current observations place the most probable daily maximum in the upper 60s, aligning with climatological norms near 68°F, though modest uncertainty in boundary-layer mixing and return flow could allow readings several degrees higher. Trader consensus reflected in the 72-73°F and 74-75°F bins at combined 83% implied probability appears to embed a slight warm bias relative to deterministic runs, possibly anticipating model trends toward warmer solutions or localized urban heat effects as the short-range window narrows.