Trancas Crossing Park Weather Forecast

    • 53
    • 82

    Increasing Clouds

    • 54
    • 86

    Increasing Clouds

    • 54
    • 83

    Mostly Sunny

    • 60
    • 88

    Mostly Cloudy

    • 61
    • 89

    Mostly Cloudy

    • 60
    • 89

    Partly Sunny

    • 59
    • 90

    Mostly Sunny

Today 8 Jul North Bay Interior Valleys

Sunny. Highs in the 70s to 80s. Southwest Winds 5 to 15 Mph.

Tonight 8 Jul North Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the 40s to upper 50s. Southwest Winds 5 to 15 Mph.

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Trancas Crossing Park Temperature Statistics

July Temperature

Napa, Napa County Airport (8.1 miles)

  • Lowest 3 July, 2026

    50.6 °F

  • Average July

    63 °F

  • Highest 3 July, 2026

    76.6 °F

Climate (2021–2026)

Napa, Napa County Airport (8.1 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.4 °F

  • Average High 2021–2026

    70.2 °F
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