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Heat in San Diego County Coastal Areas, California
Heat August 23, 2025 · San Diego County Coastal Areas, California
What the National Weather Service wrote
Daily record high temperature of 100 at Vista. Daily record high temperature of 94 at Chula Vista.
The wider storm
An upper level high pressure system allowed for a combination of above average temperatures and high humidity to produce an elevated heat risk for inland areas August 20-24. This was locally enhanced by heat bursts produced by shower activity in the coastal and valley areas on the afternoon of August 23.
Source: NOAA Storm Events Database, event 1293500. Narratives are written by the National Weather Service forecast office that issued the report.
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