Overview

• Above-normal warmth holds through Tuesday for many areas with highs in the 80s and 90s, and some locales saw early Sunday showers before drier afternoons returned.
• Lower humidity is delivering cool nights in the 50s and 60s in several regions even as parts of the Gulf and South reach the mid 90s.
• A developing low off the Southeast coast is forecast to bring increasing clouds, drizzle and light rain Tuesday into Wednesday and pull some Mid-Atlantic highs into the 70s, though inland reach remains uncertain.
• Forecasters are monitoring a tropical wave in the eastern Atlantic with roughly a 40–60% chance of development over the next week, with no immediate threat to the United States.
• Ozone and air-quality alerts are posted in parts of the Gulf Coast, where sunny skies and light winds could keep pollution levels elevated.