Larkspur Weather Forecast

    • 44
    • 49

    Mostly Sunny

    • 44
    • 52

    Mostly Sunny

    • 44
    • 55

    Mostly Sunny

    • 45
    • 60

    Partly Sunny

    • 47
    • 59

    Mostly Cloudy

    • 52
    • 61

    Chance Rain

Today 10 Dec North Bay Interior Valleys

Partly cloudy in the morning then becoming sunny. Patchy dense fog in the morning. Highs in the upper 40s to lower 60s. East Winds 5 to 10 Mph. Becoming south in the afternoon.

Tonight 10 Dec North Bay Interior Valleys

Partly cloudy. Areas of fog. Lows in the upper 30s to mid 40s. East Winds up to 5 Mph.

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Larkspur Temperature Statistics

December Temperature

Novato / Gnoss Field (14.3 miles)

  • Lowest 2 December, 2025

    37.4 °F

  • Average December

    46.5 °F

  • Highest 3 December, 2025

    71.6 °F

Climate (2020–Present)

Novato / Gnoss Field (14.3 miles)

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  • Average Low 2020–2025

    46.1 °F

  • Average 2020–2025

    57.4 °F

  • Average High 2020–2025

    72.3 °F
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