San Jose is starting today on the cool, gray side, with temperatures near 48°F at Mineta San José International and patchy fog hanging in low-lying areas. The fog should thin out by mid-morning, opening the door to mostly sunny skies and a high near 64°F this afternoon. It is a short but welcome dry window to knock out any outdoor chores before a wetter pattern moves in late Saturday.
Afternoon and Tonight
Areas of fog are most likely before 10 AM, before skies turn partly to mostly sunny, with light west-northwest winds around 1 to 8 mph. Afternoon temperatures will top out in the low to mid 60s, then slide into the low 40s overnight. Fog is expected to redevelop after 10 PM under mostly cloudy skies, with lows settling near 40°F.
Weekend Rain Outlook
Rain is expected to push tomorrow and turn steadier next Sunday, with multiple rounds of precipitation lining up into the new week. Forecast guidance points to roughly 3 to 5 inches of rain across interior valleys and 4 to 6 inches over the coastal mountain ranges, while southerly winds could gust 30 to 40 mph on Feb. 16–17. Major river flooding is not anticipated at this time, though nuisance flooding and street ponding will become more common as soils saturate, according to the National Weather Service.
Coastal Hazards And Marine Alerts
Hazardous beach conditions are expected to stick around through early Saturday morning, with a long-period northwest swell kicking up breaking waves of about 14 to 19 feet and boosting the risk of sneaker waves and strong rip currents. Small Craft Advisories are likely for parts of Monterey Bay into the weekend, and mariners are urged to avoid exposed runs while seas stay rough.
How To Prepare
Now is the time to clear gutters, secure patio furniture, and bring potted plants inside before Saturday night’s rain arrives. Drivers should budget extra time for wet roads and possible standing water, and high-profile vehicles may feel gusty crosswinds along exposed corridors. Keep an eye on transit and city alerts for real-time changes, and follow instructions from local officials if conditions start to deteriorate.
