San Jose is starting the weekend on the cool and gray side, with low clouds and pockets of valley fog keeping early morning temperatures in the upper 40s to mid 50s. That marine layer is expected to thin by mid to late morning, setting the stage for a quick warmup into the 70s and low 80s for inland neighborhoods. The real weather headline, though, is lined up for next Monday, May 11, interior parts of the city are forecast to spike into the low 90s.
Foggy Starts, Sun-Soaked Afternoons
Patchy fog near the bay and along creek corridors could slow things down a bit for early commuters, but most areas should break out into sunshine by late morning. Today’s inland high is forecast around 81°F, while coastal spots stay noticeably cooler in the 60s. West southwest afternoon breezes may gust up to 20 mph on exposed hills and bridges, so cyclists, picnickers, and anyone hauling patio umbrellas might want to plan around the wind.
Heat Peaks Monday, May 11
A strengthening ridge is expected to nudge temperatures higher by next Monday, bringing widespread 80s and low 90s to many interior valleys. The National Weather Service is flagging a moderate risk of heat-related illnesses for more vulnerable groups during this stretch, especially for anyone without reliable air conditioning. For relief options and a list of cooling centers, the Santa Clara County Office of Emergency Management has guidance available.
Marine Conditions And Weekend Winds
Out on the water, fresh to strong northwest winds and building seas are expected through the weekend, with Small Craft Advisories in effect at times for portions of Monterey Bay and nearby nearshore waters. Boaters and paddlers should anticipate gusty, choppy conditions and plan launches and returns around the stronger afternoon winds.
Plan Ahead
If you have outdoor projects or workouts lined up, consider shifting the heavy lifting to the cooler morning or evening hours, drink plenty of water, and keep an eye on neighbors who might be more vulnerable to the upcoming heat. Check updated forecasts and local advisories before heading out this weekend and into early next week, especially as temperatures climb next Monday.
