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Heat in Orange County Inland, California

Heat March 17, 2026 – March 20, 2026 · Orange County Inland, California

What the National Weather Service wrote

KSNA ASOS reported new daily maximum high temperature records broken in Santa Ana (John Wayne Airport) of 100F on 3/17, 95F on 3/18, 95F on 3/19, and 95F on 3/20, and 95F on 3/21.

The wider storm

A significant area of high pressure with heights reaching around 595 dm over the region allow for several days of all-time record breaking heat, with values as much as 30 degrees or more above the seasonal temperature for the month of March.

Source: NOAA Storm Events Database, event 1326261. Narratives are written by the National Weather Service forecast office that issued the report.

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