This record heat will cover much of southern and central California and stretch eastward into Texas. On March 17, 2026, Los Angeles County was placed under a heat advisory, with temperatures expected to range between 96 and 104 degrees. This marks a notable weather event, as it is the first time a heat advisory has been issued in the Bay Area during the month of March.
Hundreds of daily records could fall across the West, with California’s state record maximum for March being 107 degrees at Mecca on March 21, 2004. Arizona’s state record for March stands at 104 degrees in Yuma, also recorded on March 21, 2004, while Nevada’s record is 100 degrees at Laughlin on March 17, 2007.
The National Weather Service (NWS) Los Angeles/Oxnard has warned that dangerously hot conditions pose a high risk for heat illness, especially for sensitive populations. “There is a high risk for dangerous heat illness for anyone, especially for the very young, the very old, those without air conditioning, and those active outdoors,” stated the NWS.
In addition to Los Angeles, other areas are also experiencing significant temperature increases. For instance, Redwood City set an all-time March record temperature of 90 degrees, while Flagstaff, Arizona, recorded an all-time March high of 73 degrees. Santa Ana, California, reached 97 degrees, breaking the old daily record.
As the heat wave progresses, officials are urging residents to take precautions. “Drinking plenty of water frequently is vital for those exposed to heat,” experts advise. They also recommend taking breaks in cool shaded areas and allowing time for recovery from the heat during the day as effective ways to avoid heat-related illness.
As temperatures continue to rise, observers are closely monitoring the situation, and officials anticipate that this heat wave could beat previous records by more than a week. The public is advised to stay informed and take necessary actions to protect their health during this extreme weather event.
