Heat — San Diego County Valleys, California

2023-10-18 to 2023-10-20 · San Diego County Valleys, California

Event narrative

High temperatures across the San Diego County Valleys 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 San Pasqual Valley hit 99 degrees for a high, Ramona hit 97 degrees, and Escondido hit 95.

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 1144537. Narrative written by the NWS forecast office that issued the report.