Heat — San Diego County Deserts, California

2023-09-07 to 2023-09-12 · San Diego County Deserts, California

Event narrative

Hot temperatures impacted the Coachella Valley September 7-12, 2023. High temperatures reached the 100s to mid-110s each day, with overnight lows falling mainly into the 80s and 90s. The hottest temperatures occurred on September 9, when Borrego Springs reached 110 degrees.

Wider weather episode

A short-duration heat wave impacted inland locations during the second weekend of September. The Coachella Valley saw readings up to 110-115 degrees on September 9, with lows only falling into the 90s. Elsewhere, the Inland Empire, the San Diego County Valleys and the High Desert saw highs in the upper-90s to low-100s each day.

Source: NOAA Storm Events Database, event_id 1139405. Narrative written by the NWS forecast office that issued the report.