San Jose rolled in today under mostly clear skies and mild air, with temperatures sitting around 63°F at the airport as the marine layer clung to the coast while inland neighborhoods aimed for sunshine and highs in the 80s. Tropical moisture higher up in the atmosphere will add a touch of humidity through midweek and bring a small chance of high-based showers for parts of the North Bay from tomorrow into Wednesday. Morning clouds and patchy drizzle will keep early hours gray before clearing to bright afternoons inland, setting up a crisp split between cool shores and warm valleys.
Foggy Mornings, Sunny Afternoons
The National Weather Service is calling for highs near 85 today and around 90 tomorrow, while the coast hangs back in the 60s to low 70s. Inland overnight lows are expected to stay in the low 60s. Forecasters say the marine layer will push inland overnight, then retreat by late morning, producing IFR to LIFR ceilings at coastal terminals and patchy drizzle near the shore. If your commute hugs the coastline, expect a chilly, gray start that gives way to a milder, sunnier afternoon.
Small Chance Of High-Based Showers And Dry Lightning
Forecast models put the odds of elevated showers and isolated thunderstorms at roughly 5% from tomorrow into Wednesday. Any showers that form are expected to be high-based, meaning very little rain will reach the ground but a small risk of dry lightning in the North Bay. That risk comes on top of the recent breezy conditions and elevated fire concerns covered earlier this month.
What To Expect And How To Prep
Plan on a light layer for the morning commute, with inland afternoons warming into the mid-80s to near 90 tomorrow and nighttime lows dipping back into the low 60s. Boaters and beachgoers should keep an eye out for moderate northwest winds and a southerly swell that could leave seas on the choppy side, and should check local marine forecasts before heading out. Outdoor workers are advised to have a lightning plan ready during the low-probability storm window and avoid spark-producing tasks if any storms develop, even if the showers look brief and spotty.
