A Severe Extreme Heat Warning is in effect for San Diego County Deserts, California, from 23 June 2026, 20:56 to 25 June 2026, 20:00, according to the National Weather Service (NWS).
The warning indicates that dangerously hot conditions are expected, with temperatures up to 110 possible. Overnight lows in the 80s will offer little relief.
Extreme heat events may increase the risk of heat-related illnesses significantly. Residents are advised to stay hydrated, avoid prolonged exposure to the sun, and check on vulnerable neighbors and relatives. The NWS recommends staying in air-conditioned rooms and avoiding leaving young children and pets in unattended vehicles. If anyone is overcome by heat, move them to a cool and shaded location and call 911 for emergency assistance. Follow the guidance provided by local authorities and emergency services to stay safe during this extreme heat event.
