Excessive Heat — San Diego County Deserts, California

2023-07-01 to 2023-07-03 · San Diego County Deserts, California

Event narrative

A heat wave impacted the San Diego County Deserts starting on July 1st and lasted through the 3rd. Highs each afternoon at Borrego Valley Airport topped out at 113 degrees on the 1st and 2nd, and hit 115 degrees on the 3rd. Excessive Heat Warnings were in effect during this time.

Wider weather episode

Strong high pressure over the southwestern US led to increasing heat over Southern California in early July. High heat occurred each afternoon July 1st, 2nd, and 3rd, after which temperatures slowly cooled down.

Source: NOAA Storm Events Database, event_id 1120907. Narrative written by the NWS forecast office that issued the report.