Heat — Riverside County Mountains, California

2023-09-08 to 2023-09-09 · Riverside County Mountains, California

Event narrative

Hot temperatures impacted the Riverside County Mountains September 8-9, 2023. High temperatures reached the upper-80s to the mid-90s each day. The hottest temperatures occurred on September 9, when Anza reached 94 degrees, and Idyllwild reached 88 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 1139383. Narrative written by the NWS forecast office that issued the report.