An Extreme Heat Warning covering the Conejo Valley runs through 8 p.m. Thursday, Oct. 8, after daily temperature records fell across Southern California. The National Weather Service says the heat wave could stretch into mid-October.

The NWS office in Oxnard issued the warning for Ventura County valleys and coast beginning at 10 a.m. Friday, Oct. 2. Thousand Oaks, Newbury Park and Westlake Village sit squarely inside the warning zone.

Temperatures have already topped forecasts. On Friday, Oct. 2, downtown Los Angeles and Long Beach each hit 103°F, breaking daily records, according to The Watchers. The following day, Burbank reached 102°F, surpassing its Oct. 3 record of 101°F set in 1943, and the NWS Oxnard station recorded 97°F, topping its previous record of 96°F from 2014, KTLA reported.

The Ventura County Star reported that the Thousand Oaks, Camarillo and Simi Valley areas could see highs in the high 90s. Inland valleys across the county may reach 105°F, while coastal areas are expected to hover near 90°F, according to the NWS Oxnard office.

NWS Oxnard meteorologist Ryan Kittell warned during a Sept. 30 briefing that the heat wave could outlast others this year. "While we've had hotter events this season already, this one might be longest lasting," Kittell told the Ventura County Star.

NWS Oxnard meteorologist Rose Schoenfeld told the Los Angeles Times on Oct. 1 that the event has no clear cutoff. Weather service models suggest it could last through mid-October. A high-pressure ridge over the western United States and a lack of wind are driving the heat, Schoenfeld said.

Warm overnight temperatures are compounding the danger. The NWS warned that nights will offer little relief, raising the risk of heat-related illness for vulnerable residents.

Ventura County Supervisor Jeff Gorell posted on X on Oct. 2 that county libraries are available as cooling locations. Residents can also call 211 for transportation to cooling sites or visit ready.venturacounty.gov/extreme-heat/ for resources. The NWS advises staying in air-conditioned spaces, drinking plenty of fluids, avoiding direct sun and checking on neighbors. Children and pets should never be left in parked cars.

The NWS has indicated it may need to extend the warning into the second week of October.