Swanzy Reservoir Weather Forecast

    • 52
    • 75

    Increasing Clouds

    • 53
    • 71

    Mostly Sunny

    • 56
    • 82

    Mostly Sunny

    • 57
    • 89

    Sunny

    • 56
    • 84

    Mostly Sunny

    • 53
    • 75

    Partly Sunny

    • 52
    • 74

    Mostly Sunny

Today 27 May Carquinez Strait and Delta

Sunny. Highs 80 to 86. West Winds 10 to 15 Mph.

Tonight 27 May Carquinez Strait and Delta

Clear. Lows around 53. West Winds 10 to 15 Mph with Gusts to around 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Swanzy Reservoir Temperature Statistics

May Temperature

Napa, Napa County Airport (9.3 miles)

  • Lowest 4 May, 2025

    42.7 °F

  • Average May

    60.9 °F

  • Highest 9 May, 2025

    87.7 °F

Climate (2020–Present)

Napa, Napa County Airport (9.3 miles)

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  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    58.2 °F

  • Average High 2020–2025

    70.7 °F
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