Recent National Weather Service and model consensus points to a high in the mid-60s Fahrenheit for Chicago on October 2, driven by northerly winds and post-frontal cooling after showers on October 1. This setup favors clearing skies but limits daytime warming, with highs forecast around 61–65°F across sources. The pattern aligns with the market's leading 66–67°F outcome at 46.5% implied probability, followed by 64–65°F. These values sit modestly below the early-October climatological average high near 69–70°F, reflecting the seasonal transition and regional pressure gradient. Traders appear to weigh the consistent short-range guidance heavily, with limited spread expected absent a major forecast shift before resolution.