Overview
- The National Weather Service in San Diego first posted the Extreme Heat Warning on Friday, Oct. 2, republished it on Saturday, Oct. 3, and kept it in effect through 8:00 p.m. PDT on Oct. 8 for San Bernardino and Riverside county valleys.
- Daytime highs are forecast in the upper 90s to about 103–105°F with overnight lows in the lower to mid 70s, which increases the chance of heat‑related illness during both day and night.
- A short Wind Advisory for Oct. 3 called for east winds of 15 to 25 mph with gusts to 45 mph and may have caused scattered tree damage and a few power outages during the brief gusty event.
- Officials urge simple protections: drink plenty of water, stay in air‑conditioned or shaded spaces, check on elderly and medically fragile neighbors, keep children and pets out of parked cars, and use cooling shelters or worker rest breaks as needed.
- This late‑season heat continues a summer pattern of prolonged high temperatures that has stressed emergency services and utilities and raises the risk of wildfires and further outages if hot, dry conditions persist.