Greenbrae Weather Forecast

    • 56
    • 60

    Rain

    • 50
    • 63

    Rain Likely

    • 53
    • 60

    Rain Likely

    • 54
    • 60

    Rain

    • 50
    • 60

    Rain Likely

    • 51
    • 58

    Rain

Today 16 Dec North Bay Interior Valleys

Mostly cloudy. Areas of dense fog in the Morning, then patchy fog in the afternoon. A slight chance of rain in the Morning, then a chance of rain in the afternoon. Highs in the 50s to lower 60s. South Winds 5 to 10 Mph. Becoming west in the afternoon.

Tonight 16 Dec North Bay Interior Valleys

Patchy fog in the evening. Rain likely in the Evening, then rain after midnight. Lows in the 50s. Southwest Winds 10 to 15 Mph.

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Greenbrae Temperature Statistics

December Temperature

Novato / Gnoss Field (13 miles)

  • Lowest 2 December, 2025

    37.4 °F

  • Average December

    45.8 °F

  • Highest 3 December, 2025

    71.6 °F

Climate (2020–Present)

Novato / Gnoss Field (13 miles)

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  • Average Low 2020–2025

    46.2 °F

  • Average 2020–2025

    57.4 °F

  • Average High 2020–2025

    72.3 °F
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