Lake Merced Weather Forecast

    • 55
    • 65

    Mostly Sunny

    • 57
    • 73

    Mostly Sunny

    • 56
    • 73

    Partly Sunny

    • 56
    • 71

    Mostly Cloudy

    • 57
    • 72

    Mostly Cloudy

    • 58
    • 72

    Partly Sunny

    • 58
    • 72

    Partly Sunny

Today 28 Sep San Francisco

Sunny. Highs in the 60s to lower 70s. Southwest Winds around 5 Mph increasing to west 10 to 20 Mph in the afternoon.

Tonight 28 Sep San Francisco

Mostly clear. Lows in the upper 50s. West Winds 10 to 20 Mph. Becoming southwest around 5 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 23 September, 2026

    55.7 °F

  • Average September

    66.8 °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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