San Carlos Weather Forecast

    • 58
    • 76

    Chance Rain

    • 57
    • 74

    Mostly Sunny

    • 56
    • 75

    Mostly Sunny

    • 56
    • 76

    Mostly Sunny

    • 59
    • 82

    Mostly Sunny

    • 60
    • 83

    Partly Sunny

Today 3 Sep San Francisco Bay Shoreline

Partly cloudy. A slight chance of rain in the afternoon. Highs in the lower to mid 70s. Southwest Winds 10 to 20 Mph.

Tonight 3 Sep San Francisco Bay Shoreline

Mostly cloudy in the evening then becoming partly cloudy. A slight chance of rain in the evening. Lows in the upper 50s. West Winds 5 to 15 Mph.

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San Carlos Temperature Statistics

September Temperature

San Carlos Airport (0.6 miles)

  • Lowest 1 September, 2026

    60.8 °F

  • Average September

    64 °F

  • Highest 1 September, 2026

    73.4 °F

Climate (2021–2026)

San Carlos Airport (0.6 miles)

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  • Average Low 2021–2026

    51.8 °F

  • Average 2021–2026

    57 °F

  • Average High 2021–2026

    68.3 °F
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