San Francisco Bay - Fort Mason Weather Forecast

    • 54
    • 59

    Chance Rain Showers

    • 55
    • 61

    Slight Chance Rain Showers

    • 54
    • 58

    Partly Sunny

    • 54
    • 60

    Mostly Sunny

    • 54
    • 63

    Mostly Sunny

    • 55
    • 63

    Mostly Sunny

    • 56
    • 62

    Partly Sunny

Today 27 May San Francisco

Partly cloudy. Highs in the upper 50s to mid 60s. West Winds 10 to 15 Mph.

Tonight 27 May San Francisco

Mostly cloudy. A chance of Showers. Lows in the lower 50s. Southwest Winds 5 to 15 Mph. Becoming south 5 to 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Francisco Bay - Fort Mason Temperature Statistics

May Temperature

Oakland, Metro Oakland International Airport (12.4 miles)

  • Lowest 16 May, 2026

    48.7 °F

  • Average May

    61.3 °F

  • Highest 18 May, 2026

    82.7 °F

Climate (2021–Present)

Oakland, Metro Oakland International Airport (12.4 miles)

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  • Average Low 2021–2026

    51.1 °F

  • Average 2021–2026

    58.8 °F

  • Average High 2021–2026

    67.1 °F
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