Foster City Weather Forecast

    • 55
    • 79

    Partly Sunny

    • 57
    • 86

    Mostly Sunny

    • 60
    • 89

    Sunny

    • 60
    • 89

    Partly Sunny

    • 61
    • 88

    Mostly Sunny

    • 58
    • 89

    Partly Sunny

Today 15 Mar San Francisco Bay Shoreline

Sunny. Highs in the 70s to mid 80s. Northwest Winds 5 to 10 Mph.

Tonight 15 Mar San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 50s. Northwest Winds 5 to 10 Mph in the evening. Becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Foster City Temperature Statistics

March Temperature

San Carlos Airport (3.1 miles)

  • Lowest 11 March, 2026

    46.4 °F

  • Average March

    57 °F

  • Highest 8 March, 2026

    75.2 °F

Climate (2021–Present)

San Carlos Airport (3.1 miles)

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  • Average Low 2021–2026

    51.5 °F

  • Average 2021–2026

    56.7 °F

  • Average High 2021–2026

    68.2 °F
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