Charleston Slough Weather Forecast

    • 52
    • 70

    Chance Rain Showers

    • 52
    • 71

    Chance Rain Showers

    • 52
    • 68

    Partly Sunny

    • 50
    • 71

    Mostly Sunny

    • 53
    • 77

    Sunny

    • 55
    • 80

    Mostly Sunny

    • 54
    • 78

    Mostly Sunny

Today 27 May San Francisco Bay Shoreline

Partly cloudy. Highs in the mid 60s to lower 70s. West Winds 10 to 20 Mph.

Tonight 27 May San Francisco Bay Shoreline

Mostly cloudy. A slight chance of Showers in the Evening, then a chance of Showers after midnight. 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

Charleston Slough Temperature Statistics

May Temperature

Palo Alto Airport (1.9 miles)

  • Lowest 4 May, 2026

    48.2 °F

  • Average May

    63.8 °F

  • Highest 19 May, 2026

    86 °F

Climate (2021–Present)

Palo Alto Airport (1.9 miles)

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  • Average Low 2021–2026

    51.1 °F

  • Average 2021–2026

    60.6 °F

  • Average High 2021–2026

    67.4 °F
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