Lake Merced Weather Forecast

    • 57
    • 64

    Mostly Cloudy

    • 56
    • 66

    Partly Sunny

    • 58
    • 75

    Partly Sunny

    • 59
    • 72

    Mostly Cloudy

    • 57
    • 69

    Partly Sunny

    • 56
    • 67

    Partly Sunny

    • 56
    • 66

    Partly Sunny

Today 21 Sep San Francisco

Mostly cloudy. Highs in the 60s. Southwest Winds 5 to 15 Mph.

Tonight 21 Sep San Francisco

Mostly cloudy. Lows in the upper 50s. Southwest Winds 5 to 15 Mph.

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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 7 September, 2026

    56.6 °F

  • Average September

    67.6 °F

  • Highest 9 September, 2026

    94.6 °F

Climate (2021–2026)

San Francisco, San Francisco International Airport (9.3 miles)

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  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    66.8 °F
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