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California Gears Up for First Widespread Heat Wave of the Season with Triple-Digit Forecasts

Alerts spanning inland valleys through Sunday morning jeopardize public health alongside power infrastructure.

An NWS HeatRisk map shows where the worst heat is expected in California and Nevada beginning on Friday.
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Overview

  • The National Weather Service has issued extreme heat watches for California’s Central Valley, Sacramento Valley and Sierra foothills from Friday, May 30, through Sunday morning, June 1.
  • Southern Nevada and eastern California areas including Las Vegas, Pahrump and Death Valley face similar alerts with forecast highs above 104°F.
  • Several inland cities could tie or exceed daily heat records, with forecasts calling for Redding at 109°F, Sacramento at 105°F and Bakersfield at 106°F.
  • Officials warn elevated risks of heat-related illnesses for the elderly, children and outdoor workers and urge residents to stay hydrated, remain indoors and check on vulnerable neighbors.
  • Nearly 40% of California remains in drought, largely concentrated in the south, which could intensify wildfire hazards and strain water supplies under sustained heat.