Foster City Weather Forecast

    • 51
    • 70

    Increasing Clouds

    • 53
    • 70

    Partly Sunny

    • 56
    • 73

    Partly Sunny

    • 54
    • 73

    Chance Rain

    • 53
    • 70

    Chance Rain

    • 51
    • 67

    Slight Chance Rain

Today 6 Apr San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the 60s to mid 70s. West Winds 5 to 15 Mph.

Tonight 6 Apr San Francisco Bay Shoreline

Mostly cloudy. Lows in the lower 50s. West Winds around 5 Mph.

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Foster City Temperature Statistics

April Temperature

San Carlos Airport (3.1 miles)

  • Lowest 2 April, 2026

    50 °F

  • Average April

    58.8 °F

  • Highest 4 April, 2026

    80.6 °F

Climate (2021–Present)

San Carlos Airport (3.1 miles)

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  • Average Low 2021–2026

    51.6 °F

  • Average 2021–2026

    56.8 °F

  • Average High 2021–2026

    68.3 °F
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