Lake Hennessey Weather Forecast

    • 43
    • 55

    Mostly Cloudy

    • 46
    • 61

    Chance Rain

    • 52
    • 64

    Rain

    • 51
    • 59

    Rain

    • 47
    • 64

    Chance Rain

    • 49
    • 68

    Slight Chance Rain

Today 21 Feb North Bay Interior Valleys

Mostly cloudy. A slight chance of rain in the afternoon. Highs in the 50s. Southeast Winds 10 to 20 Mph. Gusts up to 40 Mph in the afternoon.

Tonight 21 Feb North Bay Interior Valleys

Mostly cloudy. Patchy fog. Lows in the 30s to lower 40s. East Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Hennessey Temperature Statistics

February Temperature

Napa, Napa County Airport (19.9 miles)

  • Lowest 18 February, 2026

    32 °F

  • Average February

    51.4 °F

  • Highest 5 February, 2026

    71.7 °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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