Downtown (South San Francisco) Weather Forecast

    • 54
    • 68

    Increasing Clouds

    • 54
    • 69

    Partly Sunny

    • 55
    • 71

    Partly Sunny

    • 55
    • 74

    Partly Sunny

    • 55
    • 71

    Mostly Sunny

    • 56
    • 69

    Partly Sunny

    • 54
    • 68

    Mostly Sunny

Today 21 Jun San Francisco Bay Shoreline

Sunny. Highs in the 60s to upper 70s. West Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 21 Jun San Francisco Bay Shoreline

Mostly clear in the evening then becoming mostly cloudy. Lows in the mid 50s. West Winds 10 to 20 Mph. Becoming 5 to 10 Mph after midnight.

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  • Temperature Real-Time

Downtown (South San Francisco) Temperature Statistics

June Temperature

San Francisco, San Francisco International Airport (3.1 miles)

  • Lowest 7 June, 2026

    51.7 °F

  • Average June

    63.9 °F

  • Highest 11 June, 2026

    91.7 °F

Climate (2021–2026)

San Francisco, San Francisco International Airport (3.1 miles)

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  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    58.6 °F

  • Average High 2021–2026

    66.8 °F
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