Overview
- Southern California and the Bay Area logged multiple March records, including 100°F in Anaheim and Santa Ana and a 93°F monthly record in Redwood City, with highs widely in the 80s and 90s.
- An Extreme Heat Warning covers desert areas through Saturday with 104–112°F likely, while Phoenix is forecast to reach 100°F as early as Wednesday and climb near 106°F Friday and Saturday.
- The National Weather Service reports very low humidity near 10–15% and urges residents to hydrate, avoid peak-afternoon exertion, use air conditioning, and check on vulnerable people and pets.
- South Florida turned cooler and cloudy behind a front, with hazardous marine conditions and a high rip‑current risk through Thursday before a gradual weekend improvement.
- Elsewhere, New England stays chilly midweek before moderating, and parts of Texas and the Lower Mississippi Valley head for a hot, dry weekend in the 80s to 90s with growing fire and drought concerns; forecasters expect only a modest cooldown early next week with temperatures remaining above normal.