Excessive Heat in San Bernardino and Riverside County Valleys - the Inland Empire, California

Excessive heat occurred in the Inland Empire July 1 to 11, 2024. On July 5, 2024, San Bernardino airport reached 117F. Other locations in the Inland Empire ranged from 103 to 118F, hottest on the east and south side. Other days during the heat wave recorded upper 90s to 105. The high temperatures again peaked on July 10 and 11 when highest temperatures in the Inland Empire reached 110F.

A record 10 day heat wave occurred early to mid July 2024. Interior southern California, mountains and deserts, experience the hottest 2 week period for July, and July 2024 was the hottest month of record at Palm Springs. The average monthly temperature in Palm Springs was 100F for July. Borrego Springs average high was also a record at 97.5F. July was also the hottest month on record for the state of California, exceeding the previous year by 1.9F.