San Jose started today, on a mellow note, with clear skies and a mild 59°F at Mineta San José International. That quiet stretch will not stick around for long. A plume of Pacific moisture is sliding into the South Bay this afternoon and will spread rain across the city. Most valley neighborhoods can plan on light to moderate showers through the evening, with a high near 69°F, while the real soaking targets the North Bay and its surrounding mountains. Expect wet roads for the evening drive and pockets of patchy fog before daybreak tomorrow.
Afternoon Rain And Commute
Rain is likely across San Jose from Tuesday afternoon into the evening, with the bulk of the daytime showers arriving between early afternoon and late evening. Forecasters are calling for around a tenth to a quarter of an inch in the valley, with higher amounts in the hills to the north. According to the National Weather Service in San Francisco, the North Bay valleys may see 1–2 inches, with some mountain spots picking up as much as 4 inches.
Evening Winds And Fog
Southerly breezes will ramp up this afternoon, turning gusty on exposed ridgelines and near the coast, and making for choppy conditions on the water. Temperatures will slip into the mid-50s overnight, and low-lying areas can expect patchy fog before sunrise tomorrow, cutting visibility during the early commute. If you have evening plans or need to be on the road early, leave extra time and keep an eye out for standing water on city streets.
North Bay Flooding And Marine Advisories
The National Weather Service notes nuisance flooding as the main flood concern across the North Bay, where the heaviest rain bands are expected to linger. Small Craft Advisories remain in effect for portions of the outer coastal waters, including zones near Point Arena and Point Reyes, through this afternoon and evening, with some advisories running until about 3 PM and others holding on into the evening near 9 PM PST. Mariners and coastal property owners should stay tuned to changing conditions. Inland, impacts are expected to be limited mostly to street ponding and slow drainage in low spots rather than any widespread or major flooding…