Thursday was the hottest day in four years in San Diego County, and the heat wave won’t be over until Monday or possibly Tuesday, the National Weather Service said.

An extreme heat warning is in effect east of Interstate 15 through 8 p.m. Monday. Seasonal temperatures are not expected to return until Wednesday.

According to meteorologists, the county experienced a heat wave on September 5 and 6, 2020, causing temperatures to soar across most of the county rather than just a handful of areas. The same thing happened on Thursday, as the high temperature numbers below show.

Ocotillo Sources: 119

Borrego sources: 115

Valley Center: 111

Ramona Airport: 111

San Pasqual Valley: 109

Saint: 108

Alps: 107

Field: 107

The Kayak: 107

Gillespieveld: 104

Secret: 104

Autumn stream: 103

Rancho San Diego: 102

The Mesa: 100

Lemon grove: 98

San Marcos: 98

Rancho Bernardo: 98

Julius: 97

View: 96

Brown field: 96

Lake Cuyamaca: 95

Miramar MCAS: 95

Montgomery Field: 95

National City: 90

San Diego International Airport: 89

Mountain Laguna: 89

Ocean side: 89

Encinitas: 87

Carlsbad Airport: 85

Coronado Island: 85

Source: NWS

Originally published: September 5, 2024 at 5:19 pm