Napa County Regional Park District - Lake Hennessey City Recreation Area Weather Forecast

    • 46
    • 67

    Sunny

    • 45
    • 66

    Sunny

    • 43
    • 66

    Sunny

    • 43
    • 65

    Mostly Sunny

    • 43
    • 66

    Mostly Sunny

    • 43
    • 64

    Partly Sunny

Today 14 Jan North Bay Interior Valleys

Sunny. Patchy fog in the morning. Highs in the 50s to upper 60s. East Winds 5 to 10 Mph.

Tonight 14 Jan North Bay Interior Valleys

Clear except for dense fog. Lows in the 40s to lower 50s. East Winds 5 to 10 Mph.

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Napa County Regional Park District - Lake Hennessey City Recreation Area Temperature Statistics

January Temperature

Napa, Napa County Airport (19.9 miles)

  • Lowest 9 January, 2026

    32 °F

  • Average January

    50.2 °F

  • Highest 2 January, 2026

    61 °F

Climate (2021–Present)

Napa, Napa County Airport (19.9 miles)

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  • Average Low 2021–2026

    47.1 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    70.1 °F
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