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HomeWeather news → Extreme Heat Warning Issued for Coachella Valley, San Diego County Deserts, and San Gorgonio Pass
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Extreme Heat Warning Issued for Coachella Valley, San Diego County Deserts, and San Gorgonio Pass

September 10, 2026 · wweather1 editorial · 1 min read

The National Weather Service in San Diego has issued an Extreme Heat Warning for the Coachella Valley, San Diego County Deserts, and San Gorgonio Pass near Banning. The warning is in effect from 4:00 AM PDT on Thursday, September 10, until 8:00 PM PDT on Friday, September 11, 2026.

Dangerously hot conditions are expected across the affected regions, with daytime high temperatures forecast to reach between 110 and 114 degrees Fahrenheit. Overnight low temperatures are expected to remain in the 80s.

According to the National Weather Service, these extreme temperatures significantly increase the risk of heat-related illnesses. Furthermore, the very warm temperatures overnight are expected to limit any relief from the heat.

The warning impacts multiple areas in Southern California, specifically the Coachella Valley, the San Diego County Deserts, and the San Gorgonio Pass near Banning. Residents in these locations are advised to take necessary precautions to stay safe during the high-heat event.

Why it is dangerous and what to do

⚠️ Safety
• Drink plenty of fluids and stay out of the sun.
• Stay in an air-conditioned room.
• Check up on relatives and neighbors.
📊 The numbers, from wweather1 data
Palm Springs: now +35°, Clear.
That is 9° above the September climate norm.
The record for this date is +43° (2024).
Three-day forecast: 10 September: +45°/+32° · 11 September: +43°/+30° · 12 September: +40°/+27°
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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