
Thursday was the hottest day San Diego County has experienced in four years —and the heat wave won’t break before Monday, and perhaps Tuesday, the National Weather Service said.
An excessive heat warning will be in effect east of Interstate 15 until 8 p.m. Monday. Seasonal temperatures likely won’t return until Wednesday.
Forecasters said the county experienced a heat wave on Sept. 5 and 6 of 2020 that sent temperatures soaring across most of the county rather than in a handful of areas. The same thing happened Thursday, as the high-temperature figures below show.
Ocotillo Wells: 119
Borrego Springs: 115
Valley Center: 111
Ramona Airport: 111
San Pasqual Valley: 109
Santee: 108
Alpine: 107
Campo: 107
El Cajon: 107
Gillespie Field: 104
Escondido: 104
Fallbrook: 103
Rancho San Diego: 102
La Mesa: 100
Lemon Grove: 98
San Marcos: 98
Rancho Bernardo: 98
Julian: 97
Vista: 96
Brown Field: 96
Lake Cuyamaca: 95
Miramar MCAS: 95
Montgomery Field: 95
National City: 90
San Diego International Airport: 89
Mount Laguna: 89
Oceanside: 89
Encinitas: 87
Carlsbad Airport: 85
Coronado Island: 85
Source: NWS