Official Sea-Tac observations through the end of July 2026 recorded just 0.42 inches of precipitation, falling below the long-term normal of roughly 0.6 inches and locking in the market consensus for totals under 0.5 inches. Persistent high pressure from the North Pacific High suppressed storm tracks and onshore moisture flow throughout the month, producing mostly dry days with only trace or zero measurable rainfall. Above-average temperatures further reinforced this subsidence pattern, consistent with climatological expectations for the Pacific Northwest summer dry season. An unusually late Pacific frontal system could have added measurable rain before month-end, but current atmospheric data and model runs indicated negligible risk of exceeding the 0.5-inch threshold.