Foster City Weather Forecast

    • 56
    • 77

    Mostly Sunny

    • 58
    • 80

    Mostly Sunny

    • 58
    • 78

    Partly Sunny

    • 58
    • 78

    Mostly Sunny

    • 59
    • 81

    Sunny

    • 57
    • 79

    Sunny

    • 57
    • 74

    Sunny

Today 23 Jul San Francisco Bay Shoreline

Mostly clear. Lows in the upper 50s. West Winds 10 to 20 Mph. Becoming southwest 5 to 10 Mph after midnight.

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Foster City Temperature Statistics

July Temperature

San Carlos Airport (3.1 miles)

  • Lowest 4 July, 2019

    55.4 °F
  • Average July

    67.8 °F
  • Highest 16 July, 2019

    82.4 °F

Climate (2010–Present)

San Carlos Airport (3.1 miles)

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  • Average Low 2010–Present

    51.9 °F
  • Average 2010–Present

    57.3 °F
  • Average High 2010–Present

    68.3 °F
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