Clear skies and building high pressure over the Pacific Northwest are driving expectations for Seattle's August 24 overnight low, with forecast models showing radiational cooling under light northerly flow after Sunday's upper-level low departs. Official guidance from sources like the National Weather Service points to minimum temperatures in the mid-to-upper 50s, influenced by dry air, minimal cloud cover, and typical late-August marine layer suppression that limits warming overnight. Recent model runs highlight modest uncertainty from wind variations and exact timing of high pressure, keeping probabilities clustered around 55–60°F while lower odds for extremes reflect the narrow historical range for this period. New forecast updates from NOAA will refine resolution criteria ahead of market close.