San Francisco Bay - Lone Tree Point Weather Forecast

    • 49
    • 51

    Increasing Clouds

    • 56
    • 57

    Rain Likely

    • 51
    • 58

    Slight Chance Rain

    • 54
    • 55

    Chance Rain

    • 53
    • 57

    Rain

    • 50
    • 54

    Rain Likely

    • 51
    • 53

    Rain Likely

Today 15 Dec East Bay Interior Valleys

Mostly cloudy. Highs in the mid 40s to lower 50s. North Winds around 5 Mph.

Tonight 15 Dec East Bay Interior Valleys

Partly cloudy in the evening then becoming mostly cloudy. Patchy dense fog. Lows in the mid 40s. West Winds up to 5 Mph. Becoming southeast around 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Francisco Bay - Lone Tree Point Temperature Statistics

December Temperature

Napa, Napa County Airport (11.8 miles)

  • Lowest 2 December, 2025

    37 °F

  • Average December

    44.7 °F

  • Highest 3 December, 2025

    66 °F

Climate (2020–Present)

Napa, Napa County Airport (11.8 miles)

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  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    70.1 °F
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