Upper Crystal Springs Reservoir Weather Forecast

    • 48
    • 68

    Decreasing Clouds

    • 47
    • 63

    Mostly Sunny

    • 49
    • 61

    Mostly Cloudy

    • 46
    • 58

    Breezy

    • 46
    • 62

    Breezy

    • 48
    • 66

    Mostly Sunny

    • 49
    • 66

    Mostly Sunny

Today 30 Apr San Francisco Bay Shoreline

Mostly cloudy in the morning then becoming sunny. Highs in the 60s to upper 70s. Light Winds. Becoming northwest 5 to 15 Mph in the afternoon.

Tonight 30 Apr San Francisco Bay Shoreline

Mostly clear. Lows in the lower 50s. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Upper Crystal Springs Reservoir Temperature Statistics

April Temperature

San Carlos Airport (4.3 miles)

  • Lowest 3 April, 2025

    42.8 °F

  • Average April

    55.3 °F

  • Highest 9 April, 2025

    77 °F

Climate (2020–Present)

San Carlos Airport (4.3 miles)

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  • Average Low 2020–2025

    51.3 °F

  • Average 2020–2025

    56.6 °F

  • Average High 2020–2025

    68.4 °F
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