Traders are pricing the highest temperature in Seattle on July 20 around 82–85°F because short-range models from NOAA and the National Weather Service indicate a continuation of the region’s above-average summer pattern, with a strong high-pressure ridge limiting marine-layer cooling and allowing daytime heating to push afternoon maxima into the low-to-mid 80s. This aligns with climatological trends showing Seattle’s July averages near 78°F and 2026 already tracking as the 14th consecutive hotter-than-normal summer. Key variables differentiating the leading brackets include the precise timing of any afternoon sea-breeze shift, model spread on boundary-layer moisture, and potential for localized urban heat effects at official measurement sites. Updated model runs tomorrow morning will provide the final guidance ahead of resolution.