Bay Area/ San Jose/ Weather & Environment

Fog, Sun and Changing Conditions: San Jose Begins a Cooler Midweek Pattern

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Published on September 14, 2026
Fog, Sun and Changing Conditions: San Jose Begins a Cooler Midweek PatternSource: Cristiano Tomás / Wikimedia Commons

San Jose is waking Monday, while patchy coastal stratus and fog are reported from the San Francisco Peninsula south to Monterey Bay. The coastal cloud cover should give way to afternoon clearing, with inland temperatures in the 80s to lower 90s.

Morning Marine Layer Gives Way to Afternoon Clearing

The National Weather Service describes dry conditions across the region, with inland temperatures in the 80s to lower 90s.

Winds will diminish Monday after earlier elevated regional winds. The changing conditions may be noticeable in exposed spots, especially for cyclists, patio diners and anyone spending the afternoon outdoors.

Cooler Midweek Before Another Sunny Rebound

A widespread marine-layer stratus deck should return Monday night into Tuesday, with a more robust marine layer Wednesday and Thursday. The cooler turn arrives Wednesday, with the midweek cooling pattern continuing through Thursday.

Temperatures may trend slightly warmer Friday into the weekend, but specific overnight lows are not provided.

Dry Weather Holds Across The South Bay

Dry conditions are described for the region, and no land-based weather alerts are listed for San Jose. Coastal areas may see patchy stratus and fog, while conditions elsewhere are expected to be mostly clear at times.