Latest National Weather Service point forecasts for Chicago O'Hare project a daytime maximum near 67°F on October 8 under northwest winds of 5-10 mph and partly to mostly sunny skies following a warm front passage. This setup favors modest daytime heating after highs reached the mid-70s on October 7, with the cooler air mass limiting peaks relative to climatological norms around 67°F. Trader sentiment clusters on the 66-69°F bins because ensemble guidance shows minor spread in frontal timing and boundary-layer mixing that could add or subtract a few degrees of insolation-driven warming. Updated model runs and afternoon observations on October 7 will refine these ranges ahead of market resolution.