First Slough Weather Forecast

    • 53
    • 82

    Mostly Sunny

    • 50
    • 69

    Mostly Sunny

    • 50
    • 75

    Mostly Sunny

    • 54
    • 69

    Slight Chance Rain

    • 52
    • 71

    Partly Sunny

    • 53
    • 74

    Sunny

Today 5 Jun San Francisco Bay Shoreline

Sunny. Highs in the 70s to lower 80s. West Winds up to 5 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 5 Jun San Francisco Bay Shoreline

Mostly clear. Lows in the lower 50s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

First Slough Temperature Statistics

June Temperature

San Carlos Airport (2.5 miles)

  • Lowest 2 June, 2026

    53.6 °F

  • Average June

    60.7 °F

  • Highest 1 June, 2026

    80.6 °F

Climate (2021–Present)

San Carlos Airport (2.5 miles)

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  • Average Low 2021–2026

    51.7 °F

  • Average 2021–2026

    56.9 °F

  • Average High 2021–2026

    68.3 °F
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