Overview

• On-and-off rain returns to Seattle on Sunday, while overnight showers in parts of the Ohio Valley and Great Lakes were spotty and generally light.
• Highs reach the mid-80s to mid-90s across many regions, with the Gulf Coast running hotter and inland nights cooling into the upper 50s to low 60s.
• Air-quality concerns accompany the warm, stagnant pattern in some cities, and recent coastal forecasts warned of elevated rip-current risk for beachgoers.
• Forecasts highlight a coastal or cut-off low near the Carolinas bringing low-end, spotty rain early this week and a midweek uptick in showers for the Upper Midwest and Great Lakes.
• An eastern Atlantic tropical wave holds a medium chance of development next week, with current guidance indicating no immediate U.S. threat.