Heat — Orange County Inland, California

2023-10-18 to 2023-10-20 · Orange County Inland, California

Event narrative

High temperatures across inland portions of Orange County on October 18th through the 20th were notably hotter than seasonal normal. Highs were routinely in the upper 80s to upper 90s during this time. The hottest day was October 20th when Anaheim hit 97 degrees for a high, Yorba Linda hit 95, while Fullerton hit 92.

Wider weather episode

High pressure at middle and upper levels of the atmosphere led to another round of weak Santa Ana Winds across portions of Southern California. The primary impact from the Santa Anas was hot daytime temperatures, with multiple daily records set during this event.

Source: NOAA Storm Events Database, event_id 1144535. Narrative written by the NWS forecast office that issued the report.