Foster City Weather Forecast

    • 61
    • 81

    Partly Sunny

    • 60
    • 80

    Partly Sunny

    • 57
    • 75

    Partly Sunny

    • 56
    • 72

    Partly Sunny

    • 56
    • 73

    Mostly Sunny

Today 26 Aug San Francisco Bay Shoreline

Sunny. Highs in the upper 70s to mid 80s. West Winds around 5 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 26 Aug San Francisco Bay Shoreline

Mostly clear. Lows in the lower 60s. West Winds 10 to 20 Mph. Becoming southeast 5 to 10 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Foster City Temperature Statistics

August Temperature

San Carlos Airport (3.1 miles)

  • Lowest 18 August, 2026

    57.2 °F

  • Average August

    63.7 °F

  • Highest 2 August, 2026

    87.8 °F

Climate (2021–2026)

San Carlos Airport (3.1 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    51.8 °F

  • Average 2021–2026

    57 °F

  • Average High 2021–2026

    68.4 °F
Get WillyWeather+ to remove ads