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Extreme Heat Warning Issued for San Diego County Coastal Areas

October 8, 2026 · wweather1 editorial · 1 min read

The National Weather Service has issued an Extreme Heat Warning for the San Diego County Coastal Areas, effective until 8:00 PM PDT on Thursday, October 8. Temperatures are expected to reach the low to mid 90s.

The National Weather Service office in San Diego, California, issued the high-severity alert at 9:21 PM PDT on Wednesday, October 7. The affected geographic region includes coastal portions of San Diego County, where dangerously hot conditions are expected.

According to weather officials, maximum temperatures during the event will range from the low to mid 90s. The NWS cautions that extreme heat events lead to a significant increase in heat-related illnesses.

The warning remains active through Thursday evening, concluding at 8:00 PM PDT. Members of the public in coastal areas are advised to limit strenuous activity and take steps to protect themselves from high ambient temperatures.

Why it is dangerous and what to do

⚠️ Safety
• Drink plenty of fluids, stay in an air-conditioned room, and stay out of the sun.
• Check up on relatives and neighbors during the high-temperature event.
• Never leave young children and pets in unattended vehicles, as car interiors can reach lethal temperatures in a matter of minutes.
📊 The numbers, from wweather1 data
San Diego: now +22°, Clear.
That is 1° below the October climate norm.
The record for this date is +33° (1950).
Three-day forecast: 13 October: +22°/+16° · 14 October: +27°/+13° · 15 October: +31°/+17°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates.

🌍 Weather in nearby cities

📰 Data source: NWS. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.

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