Current National Weather Service and private model guidance indicate Chicago will see sunny skies and a moderating southerly to southwesterly flow on October 6, supporting a daytime high in the upper 60s to low 70s. Recent runs converge on readings near 68–72 °F, slightly above the early-October climatological average of about 68 °F, with minimal cloud cover and dry conditions limiting any downward revisions. Trader emphasis on the 72–75 °F bins reflects the latest short-range guidance and the potential for modest warm advection or local heating effects, while lower-probability outcomes below 70 °F would require an unexpected northerly shift or increased mixing not currently signaled in ensemble output. Updated model cycles and official National Weather Service briefings over the next 48 hours remain the key catalysts for any probability shifts ahead of resolution.