San Francisco Bay - Belmont Slough Entrance Weather Forecast

    • 52
    • 73

    Mostly Sunny

    • 50
    • 69

    Mostly Sunny

    • 55
    • 74

    Mostly Sunny

    • 53
    • 78

    Sunny

    • 55
    • 81

    Mostly Sunny

    • 55
    • 81

    Mostly Sunny

Today 15 May San Francisco Bay Shoreline

Sunny, breezy. Highs in the 70s. West Winds 5 to 10 Mph increasing to 20 to 30 Mph in the afternoon.

Tonight 15 May San Francisco Bay Shoreline

Mostly clear. Breezy. Lows in the lower 50s. West Winds 20 to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Francisco Bay - Belmont Slough Entrance Temperature Statistics

May Temperature

San Carlos Airport (1.9 miles)

  • Lowest 1 May, 2026

    53.6 °F

  • Average May

    57.7 °F

  • Highest 11 May, 2026

    75.2 °F

Climate (2021–Present)

San Carlos Airport (1.9 miles)

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  • Average Low 2021–2026

    51.6 °F

  • Average 2021–2026

    56.9 °F

  • Average High 2021–2026

    68.3 °F
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