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NWS Issues Extreme Heat Warning for Southern California Inland Areas

August 19, 2026 · wweather1 editorial · 1 min read

The National Weather Service in San Diego has issued an Extreme Heat Warning for several Southern California desert and pass regions, where temperatures are expected to reach up to 112 degrees. The warning is in effect from 10:00 AM PDT Wednesday until 8:00 PM PDT Friday.

The National Weather Service (NWS) office in San Diego, California, issued the alert at 12:58 AM PDT on August 19. The Extreme Heat Warning officially begins at 10:00 AM PDT on August 19 and remains active until 8:00 PM PDT on August 21.

Specific locations covered by the warning include the Coachella Valley, San Diego County Deserts, and the San Gorgonio Pass near Banning. Dangerously hot conditions are forecast across these areas throughout the duration of the event.

Weather officials caution that heat-related illnesses increase significantly during extreme heat events, prompting recommendations for residents in the affected regions to take protective measures.

Why it is dangerous and what to do

⚠️ Safety
• Drink plenty of fluids.
• Stay in an air-conditioned room.
• Stay out of the sun.
• Check up on relatives and neighbors.
📊 The numbers, from wweather1 data
Palm Springs: now +42°, Partly cloudy.
That is 6° above the September climate norm.
The record for this date is +44° (2018).
Three-day forecast: 8 September: +42°/+27° · 9 September: +42°/+31° · 10 September: +42°/+29°
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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