Lake Merced Weather Forecast

    • 58
    • 71

    Mostly Cloudy

    • 59
    • 76

    Decreasing Clouds

    • 58
    • 77

    Partly Sunny

    • 59
    • 72

    Partly Sunny

    • 59
    • 68

    Mostly Cloudy

    • 60
    • 69

    Partly Sunny

    • 60
    • 70

    Mostly Cloudy

Today 14 Sep San Francisco

Sunny. Highs in the 60s to mid 70s. West Winds 10 to 20 Mph.

Tonight 14 Sep San Francisco

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Merced Temperature Statistics

September Temperature

San Francisco, San Francisco International Airport (9.3 miles)

  • Lowest 1 September, 2025

    57 °F

  • Average September

    65.4 °F

  • Highest 8 September, 2025

    77 °F

Climate (2020–Present)

San Francisco, San Francisco International Airport (9.3 miles)

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  • Average Low 2020–2025

    52.3 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    66.7 °F
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