![\"A](\"https:\/\/www.newsbeep.com\/us-ca\/wp-content\/uploads\/2026\/09\/IMG_5847.jpeg\")
<\/p>\nHeat alerts warning of dangerous weather conditions are in effect for each of San Diego County’s climate zones through Thursday as a stifling heat wave peaks.<\/p>\n
The heat warning has been extended through Thursday evening for San Diego’s coasts and inland valleys, where dangerously high temperatures could be as much as 10-15 degrees above average.<\/p>\n
Inland temperatures reached triple digits again on Wednesday, while coastal temperatures reached 90s, according to NBC 7 Meteorologist Greg Bledsoe. <\/p>\n
\t\t\t\t\t\t<\/p>\n
\t\t\t\t\tMark MullenMark Mullen<\/p>\n
A sign warning hikers to be cautious amid an extreme heat warning was posted at San Dieguito Park Trail in Rancho Santa Fe on Sept. 9, 2026. (Mark Mullen)<\/p>\n
Gillespie Field airport in El Cajon unofficially hit 108 degrees just a little before 1 p.m. Wednesday, Bledsoe said.<\/p>\n
San Diego County’s mountains are under a heat advisory through Thursday at 8 p.m. Showers are still possible over the mountains each afternoon, but chances will drop as the week goes on.<\/p>\n
Out in the boiling desert, an extreme heat warning is in effect through Friday at 8 p.m.<\/p>\n
The weekend will continue to cool. We should also see more morning marine layer clouds, and cooler overnight temperatures. More seasonal temperatures will continue into next week.<\/p>\n
Adding to the discomfort is excessively high humidity stemming from a mix of monsoonal moisture and heat rising from warmer-than-usual ocean temperatures, according to the National Weather Service. Much of the county continues to feel muggy and the mountains saw some afternoon thunderstorms this week.<\/p>\n
Tropical storms hundreds of miles away, like the recent Hurricane Marie, can also increase humidity. <\/p>\n
“The effects of Marie have faded but the monsoonal flow has returned. So, we\u2019re not really getting much of a break from the humidity,” Bledsoe said. <\/p>\n
While some relief will come Thursday and Friday, lower humidity and cooler temperatures are not likely to come before next Sunday, according to the NWS. <\/p>\n
SDG&E power outages<\/p>\n
The extreme heat also prompted San Diego Gas & Electric to carry out some unplanned outages across the county.<\/p>\n
Within 24 hours between Tuesday and Wednesday, SDG&E had 29 unplanned outages.<\/p>\n
A blackout struck at about 1:30 p.m. Wednesday, knocking out power to 8,719 SDG&E customers in Del Dios, Green Valley, the Lake Hodges vicinity, Poway, Rancho Bernardo, Rancho Penasquitos and San Pasqual, according to the utility.<\/p>\n
Service was expected to be restored to the affected areas by late afternoon.<\/p>\n
“Community members out there with this type of temperature, they\u2019re going to start using the A\/C a little bit more, fans, and that on top of appliances that they already use. That\u2019s going to put strain on the grid,” SDG&E spokesperson Humberto Gurmilan said.<\/p>\n
Until then, SDG&E recommends conserving energy by minimizing the use of appliances during peak hours. If you are impacted by a power outage, SDG&E recommends visiting their website<\/a> to get updates on restoration.<\/p>\n Hottest first pitch ever at Petco Park<\/p>\n Wednesday’s temperatures broke the record of the hottest first pitch ever at Petco Park in downtown San Diego, according to the Padres baseball team.<\/p>\n Despite the extreme temperatures, the Friar Faithful still showed up in droves to support their team.<\/p>\n \n\t\t\t\t\t\t\t\tIt was the hottest Padres game ever in Petco Park history. NBC 7’s Jeanette Quezada has more on how fans tried to stay cool during the game.\n\t\t\t\t\t\t\t<\/p>\n Cooling off during the heat<\/p>\n The NWS issues these warnings because heat illnesses increase during periods of extreme heat. Residents are urged to drink plenty of fluids, stay in air-conditioned rooms and stay out of the sun.<\/p>\n San Diego County released tips and advisories on avoiding heat-related illnesses here<\/a>.<\/p>\n Never leave pets or children unattended in vehicles. “Car interiors will reach lethal temperatures in a matter of minutes,” the NWS said. <\/p>\n Dozens of locations across San Diego County act as “Cool Zones,<\/a>” providing a space where residents can seek relief from the heat for free. See the list here<\/a>.<\/p>\n \n\t\t\t\t\t\t\t\tSan Diegans and tourists packed local beaches this Labor Day to escape the sweltering heat and muggy conditions, reports NBC 7’s Todd Strain.\n\t\t\t\t\t\t\t<\/p>\n","protected":false},"excerpt":{"rendered":"Heat alerts warning of dangerous weather conditions are in effect for each of San Diego County’s climate zones…\n","protected":false},"author":2,"featured_media":458904,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28],"tags":[3148,74,76,75],"class_list":["post-458903","post","type-post","status-publish","format-standard","has-post-thumbnail","category-san-diego","tag-first-alert-forecast","tag-san-diego","tag-san-diego-headlines","tag-san-diego-news"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/posts\/458903","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/comments?post=458903"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/posts\/458903\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/media\/458904"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/media?parent=458903"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/categories?post=458903"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/tags?post=458903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}