San Jose is soaking up a classic spring today: clear blue skies, about 54°F around midday, and an afternoon expected to climb into the low 80s. It feels pleasant now, but that calm is setting the stage for a much hotter stretch that ramps up early next week.
Heat Risk This Week
The National Weather Service has issued a Heat Advisory from 10 AM tomorrow until 8 PM on Friday, with forecasters calling for highs near 89°F on Monday and low-to-mid 90s Tuesday through Friday in many inland locations, according to NWS Bay Area. Meteorologists describe it as an early-season, long-duration heat event that could challenge March records and ramp up heat-related problems for people who are not yet used to this kind of warmth.
Expect a big split between coastal and inland temperatures. The coast should stay noticeably cooler, while inland valleys heat up significantly through the middle and end of the week.
Who Feels It Most
The heat will be most intense in interior valleys and foothills, especially in areas such as the Santa Clara Valley, the Salinas area, and the East Bay. The immediate coast should remain much more comfortable by comparison.
Those at higher risk include sensitive populations, outdoor workers and anyone without air conditioning. The longer the hot spell goes on, the more susceptible people can become. If you work or exercise outside, plan for shorter shifts, frequent breaks and plenty of water.
Cooling Centers And Local Help
Santa Clara County is opening county libraries and other public buildings as cooling centers; you can find the county’s list and detailed guidance through Santa Clara County. The county announcement highlights locations such as Milpitas Library (160 N. Main St.) and Cupertino Library (10800 Torre Ave.) as examples of sites that are typically available during heat events.
If you do not have air conditioning at home, plan to spend the hottest part of the day at a cooling center, public library or any other reliably air-conditioned indoor space.
Common-sense precautions still matter. Drink water regularly, avoid strenuous activity from about 10 AM to 5 PM, and never leave children or pets in parked cars. If someone shows signs of heat exhaustion or heat stroke, such as fainting, confusion, heavy sweating or a very high body temperature, seek medical help right away.
