Napa River - Mud Slough Entrance Weather Forecast

    • 53
    • 71

    Becoming Sunny

    • 55
    • 78

    Mostly Sunny

    • 54
    • 80

    Mostly Sunny

    • 53
    • 74

    Mostly Sunny

    • 53
    • 72

    Mostly Sunny

    • 53
    • 70

    Partly Sunny

Today 27 Jun North Bay Interior Valleys

Partly cloudy in the morning then becoming sunny. A slight chance of drizzle in the morning. Highs in the lower 60s to mid 70s. West Winds 10 to 20 Mph with Gusts to around 35 Mph.

Tonight 27 Jun North Bay Interior Valleys

Mostly cloudy. Lows in the 50s. West Winds 10 to 20 Mph.

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Napa River - Mud Slough Entrance Temperature Statistics

June Temperature

Napa, Napa County Airport (1.9 miles)

  • Lowest 7 June, 2026

    45.6 °F

  • Average June

    65.9 °F

  • Highest 11 June, 2026

    96.7 °F

Climate (2021–2026)

Napa, Napa County Airport (1.9 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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