Trancas Crossing Park Weather Forecast

    • 50
    • 70

    Slight Chance Rain

    • 50
    • 73

    Mostly Cloudy

    • 50
    • 72

    Partly Sunny

    • 50
    • 78

    Mostly Sunny

    • 52
    • 82

    Mostly Sunny

    • 53
    • 84

    Mostly Sunny

Today 27 May North Bay Interior Valleys

Partly cloudy late in the morning then becoming mostly cloudy. A slight chance of Showers in the afternoon. Highs in the 60s to lower 70s. Southwest Winds 5 to 10 Mph.

Tonight 27 May North Bay Interior Valleys

Mostly cloudy. A chance of Showers. Patchy fog after midnight. Lows in the upper 40s to mid 50s. South Winds 5 to 10 Mph. Becoming southeast after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Trancas Crossing Park Temperature Statistics

May Temperature

Napa, Napa County Airport (8.1 miles)

  • Lowest 19 May, 2026

    44.7 °F

  • Average May

    61.9 °F

  • Highest 19 May, 2026

    89.7 °F

Climate (2021–Present)

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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