Latest National Weather Service and model guidance point to a Seattle high temperature on July 30 in the mid-to-upper 70s, reflecting a warming trend under partly sunny skies with light southwest flow and minimal marine influence. Ensemble forecasts show spread around 74–79 °F, producing the market’s tight clustering on the 76–77 °F and 78–79 °F bins as traders weigh subtle differences in timing of peak heating and boundary-layer mixing. Historical July averages near 75 °F provide context, yet day-to-day variability from onshore flow or diurnal cloud cover keeps lower and higher bins viable. Updated model runs and afternoon observations will refine the exact maximum before resolution.