San Jose woke up this morning doing its best impression of a walk-in freezer, with temperatures in the mid-30s and a skim of frost settling into low-lying neighborhoods. Patchy fog is hanging around for the commute, but skies should start to break by midday. By this afternoon, the high should reach about 55°F, with breezier weather gearing up for the weekend.
Morning Frost And Fog
A Cold Weather Advisory is in effect from 1 AM to 9 AM for the Santa Clara Valley and nearby hills, bringing thin frost and pockets of fog that can slick up early-morning roads and nip at sensitive plants. Drivers are urged to take it slow on bridges, ramps and shaded streets, and neighbors are encouraged to look out for anyone who might be especially vulnerable to the cold. The full advisory is available from the National Weather Service San Francisco.
Afternoon And Weekend Outlook
Once the frost and fog back off, afternoon temperatures should climb into the mid-50s, with a high near 55°F before easing down slightly later in the day. Tomorrow will bring a modest warm-up, with a high near 60°F and south-southeast winds of 5 to 13 mph, gusting up to 22 mph in the valley, with stronger gusts possible on exposed ridgelines. Rain chances start to ramp up Sunday night and into early next week, with the best shot at wet weather coming Monday night into Tuesday. Minor ponding and urban flooding could occur in areas with poor drainage.
How To Prepare
Locals are advised to dress in layers, cover or move sensitive plants, bring pets indoors and plan for slower-going commutes in foggy conditions. Warming centers and county resources are available for anyone who needs shelter or assistance; locations and cold-weather guidance are listed by the Santa Clara County Office of Emergency Management. If someone appears to be in immediate danger from the cold, call 911.
