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Extreme heat warning issued as weather officials warn of historic temperatures across Southern California

Temperatures 20 to 35 degrees above normal are expected, with a high risk of heat illness as Southern California faces potentially record-breaking early-season heat.

  • On March 17, the National Weather Service issued an Extreme Heat Warning effective 10 a.m. through 8 p.m. Friday, forecasting inland highs of 96 to 104 degrees.
  • A strong ridge of high pressure is expected to linger, while weak offshore gradients funnel warm desert air, driving temperatures 20 to 35 degrees above normal mid-week, National Weather Service meteorologist Robbie Monroe said.
  • Monday readings showed Woodland Hills reached 97 degrees and Burbank hit 92, both breaking daily records.
  • County and state officials warned of high heat illness risk, opened Los Angeles city libraries and recreation centers with extended hours, and Cal/OSHA urged employers to provide shade, water and rest breaks.
  • San Diego County deserts, the Coachella Valley and the San Gorgonio Pass could reach 104 to 112 starting Wednesday, March 18, with up to 114 possible Thursday and Friday before cooling to 84 by Saturday.
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NBC LA broke the news in Los Angeles, United States on Monday, March 16, 2026.
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