Excessive Heat in San Diego County Mountains, California

An extended period of excessive heat. On July 5, 2024, it was recorded as high as 106 to 108F at 3500 feet in the San Diego mountains including Descanso. Other days during the heat wave reached the mid 90s to 102F in the Cuyamaca, Laguna and Palomar mountains.

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.