Overview

• Large swaths of the country stay unseasonably warm and mostly dry this weekend, with highs in the 80s and 90s and only spotty showers in places.
• Rain is set to sweep Seattle’s I-5 corridor early Sunday with on-and-off showers into the evening, followed by a brief warm spike Tuesday before a cooler, showery midweek.
• Houston remains hot and humid in the mid-90s with ozone action days and air-quality alerts for Houston, Galveston and Brazoria counties, plus a low chance of storms Sunday.
• A tropical wave in the eastern Atlantic carries about a 40–50% chance of development over seven days, and forecasters say there is no immediate U.S. threat.
• A midweek system is expected to boost rain chances and knock back temperatures in parts of the north-central U.S., including areas around Kansas City, Minnesota and Colorado, as drought concerns linger in New England and Northeast Ohio.