# Extreme heat in Southern California

> Live situation record from CLSTR: https://clstr.news/situations/extreme-heat-in-southern-california
> Updated: 2026-10-06T13:44:00.000Z. Sources: 3. Developments: 2.

Southern California has experienced periods of extreme heat and high humidity. In September, the Coachella Valley faced temperatures near 110 degrees with high dew points, though an onshore flow was expected to bring a drying trend and gradual cooling.

By October, a prolonged heat wave impacted several counties, including Los Angeles, Orange, and Coachella. Downtown Los Angeles recorded four consecutive days of triple-digit temperatures, and Hollywood Burbank Airport reached a record high of 101 degrees. In the Coachella Valley, temperatures remained 10 to 15 degrees above seasonal averages, reaching up to 108 degrees, before high pressure weakened to allow for a cooldown. There is a slight possibility that moisture from Hurricane Rachel could bring light showers to the region.

## Timeline

### 2026-10-06: Southern California faces extreme heat warnings

An intense October heat wave is affecting Southern California, with extreme heat warnings issued for Los Angeles, Orange, and Coachella counties as temperatures reach triple digits.

2 sources. https://clstr.news/cluster/southern-california-faces-extreme-heat-warnings

### 2026-09-11: Coachella Valley weather forecast shows cooling trend after extreme heat

The Coachella Valley is facing extreme heat and high humidity, but a cooling and drying trend is expected to begin Sunday as temperatures gradually decrease throughout the early part of next week.

2 sources. https://clstr.news/cluster/coachella-valley-weather-forecast-shows-cooling-trend-after-extreme-heat

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Cite as: Extreme heat in Southern California. CLSTR, https://clstr.news/situations/extreme-heat-in-southern-california