Latest National Weather Service and ensemble model guidance point to a sunny October 6 in Chicago with southerly flow ahead of a weak trough, supporting daytime highs in the upper 60s to low 70s. This pattern follows a recent cold front that cleared skies and allowed modest warming, though model spread keeps the precise peak uncertain within a few degrees. Historical climatology shows an average high near 68°F for the date, making the current outlook near or slightly above normal. Market-implied odds favoring 72–75°F reflect trader weighting of warmer ensemble members and typical short-term forecast variability this far ahead, with lower-probability bins capturing downside risks from faster cooling or cloud cover. Updated model runs and NWS briefings over the next 48 hours will refine the exact maximum.