Lake Hennessey Weather Forecast

    • 51
    • 78

    Increasing Clouds

    • 51
    • 72

    Chance Rain

    • 50
    • 67

    Rain Showers

    • 44
    • 64

    Chance Rain

    • 42
    • 61

    Chance Rain

    • 44
    • 68

    Mostly Sunny

Today 8 Apr North Bay Interior Valleys

Sunny. Highs in the upper 60s to lower 80s. West Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 8 Apr North Bay Interior Valleys

Mostly clear. Lows in the mid 40s to upper 50s. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Hennessey Temperature Statistics

April Temperature

Napa, Napa County Airport (19.9 miles)

  • Lowest 3 April, 2026

    38.6 °F

  • Average April

    59 °F

  • Highest 5 April, 2026

    82 °F

Climate (2021–Present)

Napa, Napa County Airport (19.9 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    70.3 °F
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