Current National Weather Service and model guidance indicate mostly clear skies and light northwest winds overnight into August 22, supporting radiational cooling under typical late-summer high pressure. This setup favors a minimum near 71°F at Hartsfield-Jackson, aligning with the 72-73°F bin that holds the highest implied probability. Clear conditions and dew points in the upper 60s allow efficient heat loss after sunset, yet the absence of a strong cold front or unusually dry air mass keeps extreme drops unlikely. Traders weighting the 61°F-or-below outcome appear focused on potential model variability or localized cooling, while the clustered mid-60s to low-70s ranges reflect uncertainty in exact wind and cloud timing before resolution.