Lone Mountain Weather Forecast

    • 59
    • 74

    Mostly Sunny

    • 58
    • 74

    Mostly Sunny

    • 60
    • 71

    Partly Sunny

    • 60
    • 66

    Chance Rain Showers

    • 61
    • 69

    Slight Chance Rain Showers

    • 60
    • 68

    Partly Sunny

    • 59
    • 68

    Partly Sunny

Today 15 Sep San Francisco

Sunny. Highs in the upper 60s to mid 80s. Northeast Winds around 5 Mph. Becoming west 10 to 15 Mph in the afternoon.

Tonight 15 Sep San Francisco

Mostly clear in the evening then becoming partly cloudy. Lows around 60. Southwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Lone Mountain Temperature Statistics

September Temperature

San Francisco, San Francisco International Airport (11.8 miles)

  • Lowest 1 September, 2025

    57 °F

  • Average September

    65.2 °F

  • Highest 8 September, 2025

    77 °F

Climate (2020–Present)

San Francisco, San Francisco International Airport (11.8 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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